Do You Need an Android Antivirus in 2025? Expert Insights and Top Apps

Android, security / / May 3, 2025

With our smartphones holding an ever-increasing amount of sensitive information, the question of whether Android devices need antivirus protection is more relevant than ever. While Android has built-in security measures, the open nature of the ecosystem and the evolving threat landscape mean that additional protection is often a wise choice.

The Evolving Threat Landscape: Why Antivirus is Still Relevant

The notion that Android devices are immune to malware is a dangerous misconception. While Google Play Protect does a decent job of scanning apps in the Play Store, threats can still emerge from various sources, including:

  • Malicious Apps: Despite Google’s efforts, some malicious apps can occasionally slip through the cracks and appear on the Play Store, or be downloaded from third-party sources.
  • Phishing Attacks: Emails and messages containing malicious links designed to steal your personal information remain a significant threat.
  • Malicious Websites: Visiting compromised websites can expose your device to drive-by downloads or exploits.
  • Sideloaded Apps: Installing apps from outside the Google Play Store (sideloading) increases the risk of encountering malware.

Experts agree that in 2025, antivirus software for Android still provides a valuable layer of defense against these escalating cyberthreats, including ransomware, spyware, and adware.

Key Features to Look for in an Android Antivirus App

A good Android antivirus app offers more than just basic scanning. Here are some key features to consider:

  • Real-Time Scanning and Malware Protection: Continuously monitors your device and new installations for threats.
  • Web Protection/Safe Browse: Blocks access to malicious websites and phishing attempts.
  • App Scanning and Privacy Advisor: Analyzes apps for potential risks and provides insights into app permissions.
  • Anti-Theft Features: Helps locate, lock, or wipe your device if it’s lost or stolen.
  • Performance Optimization: Some apps include tools to help clean up junk files and optimize device performance.
  • VPN Integration: A bundled VPN can provide added privacy and security when Browse online.
  • Automatic Updates: Regular updates to the threat database are crucial for detecting the latest malware.

Top Android Antivirus Apps of 2025

Expert testing in 2025 highlights several top contenders for the best Android antivirus protection:

  • Bitdefender Mobile Security: Frequently praised for its robust security features, excellent malware detection rates, and user-friendly interface. It often includes features like web protection and anti-theft.
  • Sophos Intercept X for Mobile: Noted as a strong free option providing good protection against malware and offering features like app protection and a privacy advisor.
  • Avast Security & Virus Cleaner: Known for its effectiveness in blocking malicious websites and comprehensive scanning capabilities. While the free version may contain ads, it offers solid protection.
  • Malwarebytes Mobile Security: Recommended for its focus on quickly finding and removing malware with a simple interface.
  • Norton 360: A reputable name in security, offering strong malware protection, web protection, and often bundled with features like a secure VPN and identity theft monitoring.
  • TotalAV Mobile Security: Recognized for good malware detection rates and often includes extra features like device cleanup and a data breach scanner.
  • McAfee Mobile Security: Provides a range of security features, including anti-theft and performance optimization tools.
  • ESET Mobile Security: Another strong performer in independent lab tests, offering reliable malware detection and anti-theft features.
  • Trend Micro Mobile Security: Known for high malware detection rates and can include features like parental controls and scam call blocking.
  • Avira Security Antivirus: Offers good protection with a focus on performance and privacy features.
  • Panda Dome Essential: Provides real-time protection and anti-theft features.
  • Other options: 360 Security Antivirus Clean, Hypatia (a free malware scanner), and ProtectStar have also been mentioned as potential alternatives.

Potential Downsides to Consider

While the benefits of using an Android antivirus are clear, there can be some potential downsides:

  • Resource Consumption: Some antivirus apps can consume battery and system resources, potentially slowing down older or less powerful devices.
  • Annoying Notifications: Some free versions may display frequent ads or upgrade prompts.
  • Overlapping Features: Android has built-in features like Find My Device and Google Play Protect, which might overlap with some antivirus features.

Conclusion

For users who download apps from various sources, click on links in emails or messages, or simply want an extra layer of security and peace of mind, an Android antivirus app is a worthwhile investment in 2025. While Android’s built-in security is improving, a reputable third-party antivirus can offer more comprehensive protection against the ever-evolving landscape of mobile threats.

Do You Need an Android Antivirus in 2025? Expert Insights and Top Apps Read More »

The Burgeoning Market for WebAssembly Observability: Powering the Future of IoT and Serverless

IoT, observability, webassembly / / May 1, 2025

WebAssembly is rapidly transforming the landscape of both IoT and serverless computing. Its ability to deliver near-native performance, enhanced security, and cross-platform compatibility is driving its adoption across diverse industries. As these Wasm deployments scale, the need for robust observability solutions becomes paramount.

Why WebAssembly Will Succeed

Wasm’s growing success in IoT and serverless can be attributed to several key factors:

  • Performance: Wasm provides near-native execution speed. This is crucial for performance-sensitive applications in IoT and serverless environments where efficiency directly impacts responsiveness and cost.
  • Security: Wasm operates in a sandboxed environment, offering a strong security boundary. This isolation is particularly important for IoT devices, often deployed in potentially vulnerable locations, and for multi-tenant serverless platforms.
  • Portability: Wasm’s “write once, run anywhere” promise is a significant advantage. Developers can build applications that run consistently across diverse IoT devices and various serverless FaaS (Function as a Service) platforms without extensive modifications.
  • Efficiency: Wasm’s compact binary format and efficient execution model lead to lower resource consumption (CPU, memory). This is critical for resource-constrained IoT devices and contributes to cost-effectiveness in pay-per-use serverless models.

The Critical Need for WASM Observability

As Wasm-based applications become more complex and distributed, particularly in IoT and serverless architectures, robust observability is no longer a luxury but a necessity. It is essential for:

  • Performance Monitoring: Continuously tracking and analyzing the execution speed and resource usage of Wasm modules to ensure they deliver their promised performance benefits in real-world conditions.
  • Troubleshooting: Quickly identifying the root cause of issues, bugs, or performance bottlenecks within distributed Wasm systems and across the interactions between Wasm modules and their host environments.
  • Security Monitoring: Gaining visibility into the behavior of Wasm instances to detect anomalous activities or potential security threats within the sandbox.
  • Resource Optimization: Understanding how Wasm functions consume resources in serverless environments to optimize costs and ensure efficient scaling. For IoT, it’s vital for managing limited device resources effectively.

Market Size and Projections

While specific, dedicated market size projections for Wasm observability are still an emerging area of research, the growth trends in related markets clearly indicate a significant future opportunity:

  • IoT Device Management Market: This market is projected to grow substantially, with some reports indicating a potential size of USD 40.15 billion by 2032 with a CAGR of over 30%. The increasing number and diversity of connected devices necessitate robust management and monitoring, creating a direct need for Wasm observability as Wasm becomes more prevalent on these devices.
  • Serverless Computing Market: The serverless market is also experiencing rapid expansion, with projections suggesting it could reach USD 50-60 billion by 2030, with strong CAGRs. As more applications adopt serverless architectures, the demand for visibility into these ephemeral and distributed functions will surge, driving the need for Wasm-native observability.
  • Observability Tools and Platforms Market: The broader market for observability tools across all technologies is already significant, valued at several billion dollars and projected for continued growth at a healthy CAGR. This indicates a widespread recognition of the value of deep system visibility, a trend that will naturally encompass Wasm deployments.

The absence of specific “Wasm observability market size” figures doesn’t diminish the potential; rather, it suggests it’s an integral, growing component within these larger, rapidly expanding markets for IoT, serverless computing, and general observability.

The Future of Wasm Observability

The future of Wasm observability is bright and will likely involve:

  • Specialized Wasm Runtimes with Built-in Observability: Runtimes designed with observability features from the ground up, providing detailed metrics, tracing, and logging of Wasm execution.
  • Integration with Cloud-Native Ecosystems: Seamless integration of Wasm observability data into existing cloud-native monitoring and analysis platforms.
  • Enhanced Edge Observability: Tools and techniques specifically designed for collecting and processing observability data from Wasm running on resource-constrained edge and IoT devices.
  • Standardization: Development of standards for Wasm observability to ensure interoperability between different runtimes and tools.

As Wasm continues its trajectory towards becoming a ubiquitous runtime for distributed systems, the market for solutions that provide deep visibility into its execution will grow in tandem, becoming an essential part of the modern software development and deployment landscape.

The Burgeoning Market for WebAssembly Observability: Powering the Future of IoT and Serverless Read More »

Linux Kernel 6.14 and 6.15: Powering the Future of eBPF, WASM, and Serverless

ebpf, linux, serverless, webassembly / / April 30, 2025

The Linux kernel continues to evolve at a rapid pace, and the 6.14 and 6.15 releases bring a host of new features that are particularly relevant to cutting-edge technologies like eBPF, WebAssembly (Wasm), and serverless computing. Let’s delve into the key highlights from these releases.

Linux 6.14: Strengthening the Foundations

  • Improved Security: Kernel hardening and various security enhancements provide a more robust base for all applications, including those leveraging eBPF.
  • Enhanced Hardware Support: New drivers and architecture updates ensure compatibility with the latest hardware, which is crucial for serverless deployments.
  • General Performance Improvements: Optimizations across the kernel contribute to better performance for all workloads.

Although the article doesn’t specifically call out features directly beneficial to eBPF, WASm, or serverless, any improvements to core kernel functionality are generally advantageous for these technologies.

Linux 6.15: A Leap Forward

Linux 6.15 builds upon the foundation of 6.14, offering more concrete advancements in areas that directly impact eBPF, WASm, and serverless:

  • Expanded File Name Support: A significant change in 6.15 is the increased filename length limit for user-space filesystems (FUSE), jumping from 1024 to 4096 bytes. This enhancement, while seemingly minor, can be beneficial in complex serverless environments where dealing with uniquely named resources or containers is common.
  • Improved Storage and Filesystem Capabilities: EXT4 file system hardening and various enhancements to F2FS contribute to improved reliability and performance. Furthermore, Btrfs sees improvements with Zstandard compression.
  • Hardware Advancements: Support for newer AMD and Intel processors translates directly to improved performance for serverless functions, especially those running on bare metal or in virtualized environments.
  • Networking Improvements: While details need more investigation, any improvements to networking within the kernel directly enhance the performance and reliability of serverless functions and containerized applications, a key component of WASm and eBPF deployment scenarios.
  • Security Updates: Linux 6.15 incorporates vital security measures, including broader mitigation strategies against different types of attacks. This enhanced overall security is vital for eBPF and WASm applications, and for serverless environments.

Implications for eBPF Development

eBPF thrives on a stable and feature-rich kernel. The performance and security improvements in both 6.14 and 6.15 make them excellent choices for eBPF development and deployment. Specific features that are likely beneficial include the stability updates and enhanced hardware compatibility.

Benefits for WASM

WebAssembly runtimes, particularly those running outside of the browser (e.g., in serverless functions or on the edge), benefit from a robust kernel. The general performance increases and security enhancements in these kernel releases are beneficial.

Impact on Serverless Computing

Serverless platforms rely heavily on kernel features for resource management, isolation, and networking. The improvements in 6.14 and especially the enhancements in networking, storage and the larger filename support in 6.15 can translate to more efficient and scalable serverless deployments. The ability to handle larger filenames is surprisingly relevant in complex serverless environments where container names and unique resource identifiers are common.

Conclusion

Linux 6.14 and 6.15 provide a solid foundation for the continued growth of eBPF, WASm, and serverless computing. While some features offer indirect benefits by improving overall kernel stability and performance, other changes, especially related to storage, networking, and the expanded filename lengths directly address the needs of these demanding technologies. As these technologies continue to mature, the ongoing evolution of the Linux kernel will be critical to their success.

Linux Kernel 6.14 and 6.15: Powering the Future of eBPF, WASM, and Serverless Read More »

The App Store Revolution: How Alternative Marketplaces are Challenging Apple’s Walled Garden

iOs / / April 30, 2025

For years, the Apple App Store has been the primary, and often the only, gateway for developers to reach millions of iPhone and iPad users. Its curated ecosystem, while praised for security and user experience, has also been criticized for its strict policies, review process, and the controversial 30% commission fee on sales and in-app purchases. However, a new era is dawning, driven by regulatory pressure and the ingenuity of developers creating alternative distribution channels. The story of AltStore, as highlighted in the recent article on El Adelantado, is a prime example of this burgeoning revolution, showcasing how developers and users are finding ways to thrive outside of Apple’s traditional “walled garden.”

The Reign of the App Store

Since its launch in 2008, the Apple App Store has been a monumental success, shaping the mobile landscape and generating billions in revenue. For developers, it offered a centralized platform with a massive user base and built-in payment processing. For users, it provided a seemingly safe and convenient place to discover and download applications.

However, this dominance came with significant control. Apple’s stringent App Review Guidelines dictated what kind of apps were allowed, leading to rejections for various reasons, from content and functionality to business models. The mandatory use of Apple’s in-app purchase system and the associated 30% cut became a major point of contention for many developers, particularly larger companies and those with subscription-based services.

The Spark of Revolution: Regulatory Pressure and AltStore’s Rise

The landscape began to shift significantly with the introduction of regulations like the European Union’s Digital Markets Act (DMA). The DMA aims to curb the power of “gatekeepers” like Apple, forcing them to open up their platforms to more competition. A key requirement is allowing third-party app stores and the sideloading of applications outside the official App Store.

This regulatory push provided fertile ground for alternative distribution methods to gain traction. AltStore, initially a workaround for installing emulators and other unofficial apps via a computer, found itself at the forefront of this change. The El Adelantado article highlights AltStore’s evolution, becoming the first alternative app store approved under the new EU regulations. Its ability to distribute apps that Apple previously restricted, like emulators and clipboard managers, demonstrates the potential for a more open iOS ecosystem. AltStore’s partnership with companies like Epic Games, a vocal critic of Apple’s App Store policies, further underscores the significance of these alternative channels.

How to Get iOS Apps Out of Apple’s Walled Garden

For developers looking to distribute their apps beyond the confines of the official App Store, several avenues are opening up, particularly in regions affected by new regulations like the DMA:

  1. Alternative App Marketplaces: This is the most direct challenge to the App Store’s monopoly. Developers can submit their apps to third-party app stores like AltStore (in the EU). These marketplaces have their own review processes, distribution models, and fee structures, often offering more favorable terms than Apple.
    • Image Description: A diagram showing a developer icon connected to multiple app store icons (including Apple App Store and several alternative store icons) with arrows indicating app submission and distribution.*
    To get an app onto an alternative marketplace, developers typically need to:
    • Agree to Apple’s updated business terms for the EU, which include new fees like the Core Technology Fee.
    • Pass Apple’s Notarization process, a baseline security review that all iOS apps, regardless of distribution method, must undergo in the EU.
    • Adhere to the specific guidelines and technical requirements of the chosen alternative marketplace.
    • Utilize tools and APIs provided by Apple (like MarketplaceKit in the EU) to enable the marketplace to receive and distribute notarized apps.
  2. Web Distribution: The DMA also mandates that in the EU, developers will be able to offer direct downloads of their apps from their own websites, bypassing app stores entirely. This is a significant shift, giving developers complete control over distribution.
    • Image Description: A diagram showing a developer icon and a website icon, with an arrow directly connecting the website icon to a mobile phone icon, illustrating direct web distribution.*
    Similar to alternative marketplaces, web distribution in the EU requires developers to:
    • Agree to the new EU business terms and the Core Technology Fee.
    • Ensure their apps pass Apple’s Notarization process.
    • Implement the necessary technical infrastructure on their website to facilitate secure downloads and updates.
  3. Enterprise Distribution: For distributing apps within an organization to its employees, Apple offers the Apple Developer Enterprise Program. This allows companies to deploy internal-use apps directly to employee devices without going through the public App Store. This method is not for distributing apps to the general public.
  4. TestFlight: While primarily a beta testing platform, TestFlight allows developers to distribute pre-release versions of their apps to a limited number of external testers (up to 10,000). This is a way to get the app onto devices outside the App Store for testing purposes before a potential public release elsewhere.
  5. Ad Hoc Distribution: This method allows distribution to a small number of registered devices (up to 100 per device type). It’s primarily used for testing and demonstrating apps to a select group but is not suitable for widespread distribution.

Code Samples

While the process of using alternative stores is more about distribution channels and configurations than writing app-level code specifically for a store, developers building apps for iOS will still use Swift or Objective-C (or frameworks like React Native or Flutter). The interaction with alternative distribution methods would involve using tools provided by Apple (for notarization and potentially interacting with new EU-specific APIs) and complying with the requirements of the alternative marketplace.

For example, a developer using Swift to build an app would follow the standard iOS development practices. The “getting it out of Apple” part comes in the build and distribution phase, not typically in the core application code itself.

A conceptual illustration might involve command-line tools for notarization:

Bash

# Example conceptual command for notarizing an app for alternative distribution (actual commands may vary)
xcrun notarytool submit /path/to/your/app.ipa --key "api_key.p8" --key-id "ABCDEFGHIJ" --issuer-id "YOUR_ISSUER_ID"

A command for notarizing an iOS application.

Benefits and Challenges of Alternative Stores

Using alternative app stores and distribution methods offers both advantages and disadvantages for developers and users:

Benefits:

  • For Developers:
    • Potentially lower commission fees, allowing developers to retain more revenue.
    • Greater flexibility in app content and functionality, potentially allowing apps that wouldn’t pass App Store review.
    • Access to niche markets and specific user demographics catered to by individual alternative stores.
    • More control over the distribution process and direct relationships with users (especially with web distribution).
  • For Users:
    • Access to a wider variety of apps, including those not available on the App Store (like emulators).
    • Potential for slightly lower app prices if developers pass on savings from lower fees.
    • More choice in where and how they obtain apps.

Challenges:

  • For Developers:
    • Market fragmentation: Managing distribution and updates across multiple platforms can be complex.
    • Increased responsibility for marketing and discovery, as alternative stores may not have the same reach as the App Store.
    • Implementing infrastructure for web distribution (hosting, updates, security).
    • Navigating new fee structures and compliance requirements (like Apple’s Core Technology Fee in the EU).
  • For Users:
    • Potential security risks if alternative stores lack rigorous vetting processes.
    • Inconsistent user experience and features compared to the curated App Store.
    • Lack of centralized management for updates and purchases across different stores.
    • Features like Screen Time restrictions or Family Sharing of purchases may not be supported for apps from alternative sources.

The Future Landscape

The emergence of alternative app stores and distribution methods signals a significant shift in the iOS ecosystem, particularly in response to regulatory mandates. While Apple is adapting by introducing new frameworks and processes for alternative distribution, the relationship between Apple, developers, and alternative marketplaces is still evolving. The “App Store revolution” is underway, promising a future with more choice and potentially more opportunities, but also requiring greater awareness and caution from both developers and users navigating this new landscape.

The success of alternative stores like AltStore will pave the way for others, fostering innovation and competition in the mobile app distribution space. It remains to be seen how widely users will adopt these alternatives and how significantly they will impact the dominance of the official App Store in the long term.

The App Store Revolution: How Alternative Marketplaces are Challenging Apple’s Walled Garden Read More »

Python and WebAssembly: A Powerful Combination

python, webassembly / / April 27, 2025

WebAssembly is a binary instruction format that enables near-native performance in web browsers. While traditionally languages like C, C++, and Rust have been compiled to WebAssembly, recent advancements have made it possible to run Python code within a WebAssembly environment. This blog post explores how to use Python with WebAssembly, showcasing code examples and real-world applications.

Why Use Python with WebAssembly?

  • Performance: Run computationally intensive Python code at near-native speeds in the browser.
  • Cross-Platform Compatibility: Execute Python code seamlessly across different operating systems and devices.
  • Security: WebAssembly runs in a sandboxed environment, enhancing the security of web applications.
  • Leverage Existing Python Libraries: Utilize popular Python libraries for data manipulation, machine learning, and more, directly in the browser.

Tools and Technologies

  • Pyodide: A Python distribution for the browser and Node.js based on WebAssembly. It allows installing and running Python packages with micropip.
  • Wasmtime: A standalone WebAssembly runtime that can execute WebAssembly modules outside the browser.

Code Examples

Basic Python in the Browser with Pyodide:

<!DOCTYPE html>
<html>
<head>
  <script src="https://cdn.jsdelivr.net/pyodide/v0.24.1/pyodide.js"></script>
</head>
<body>
  <script>
    async function main() {
      let pyodide = await loadPyodide();
      console.log(pyodide.runPython(`
        import sys
        print(sys.version)
        print("Hello, Pyodide!")
      `));
    }
    main();
  </script>
</body>
</html>

Using External Python Packages:

from pyodide.http
import open_url
import pandas as pd
import matplotlib.pyplot as plt import io

# Fetch a CSV file from a URL
url = "https://raw.githubusercontent.com/jerry-shen/Pandas_Tutorial/master/sales.csv"
response = await open_url(url) csv_content = await response.text()

# Read the CSV into a Pandas DataFrame
df = pd.read_csv(io.StringIO(csv_content))

# Calculate total sales per product
product_sales = df.groupby('Product')['SalePrice'].sum()

# Create a bar chart product_sales.plot(kind='bar')
plt.title('Total Sales per Product')
plt.xlabel('Product')
plt.ylabel('Total Sales')
plt.show()

    Real-World Applications

    • High-Performance Web Applications: Python combined with WebAssembly can handle computationally intensive tasks in web applications, such as simulations, data analytics, and real-time rendering. Examples include online code editors, image editors, and 3D modeling tools.
    • Data Visualization Dashboards: Interactive data dashboards powered by libraries like Matplotlib or Seaborn can be made faster and more responsive using WebAssembly.
    • Machine Learning in the Browser: TensorFlow.js uses WebAssembly to accelerate the performance of its models in the browser, enabling real-time image and speech recognition tasks.
    • Cross-Platform Development: Build applications that run consistently on mobile, desktop, and the browser using Python and WebAssembly.

    Deployment Advantages

    WebAssembly’s sandboxed environment limits access to underlying hardware and system resources, enhancing the security of web applications. This is particularly important for applications handling sensitive data, such as those in health, finance, and e-commerce.

    Conclusion

    The combination of Python and WebAssembly opens up new possibilities for web development. By leveraging WebAssembly’s performance and security benefits, developers can create powerful and efficient web applications using the flexibility and rich ecosystem of Python.

    Would you like to explore any of these topics in more detail, or perhaps generate an image related to Python and WebAssembly?

    Python and WebAssembly: A Powerful Combination Read More »

    Understanding the WebAssembly ABI: Navigating the wasm32-unknown-unknown and the Future

    webassembly / / May 11, 2025

    WebAssembly (Wasm) has emerged as a powerful, portable, and secure binary format for the web and beyond. As developers increasingly compile code from languages like C, C++, and Rust to Wasm, understanding the Application Binary Interface (ABI) becomes crucial for ensuring interoperability and correct execution. This post delves into the intricacies of the Wasm ABI, with a specific focus on the wasm32-unknown-unknown target and the recent developments affecting the C ABI.

    What is an ABI and Why Does it Matter for Wasm?

    An ABI, or Application Binary Interface, is essentially a contract between different parts of a program or between a program and the operating system. It defines low-level details such as how functions are called, how data structures are laid out in memory, and how data types are represented when passed between modules.

    In the context of Wasm, the ABI dictates how Wasm modules interact with each other and with the host environment they run in (e.g., a web browser, a server-side runtime). Unlike traditional native ABIs that deal with hardware registers, Wasm operates on a stack-based virtual machine with a defined set of value types (i32, i64, f32, f64). A Wasm ABI defines how higher-level language constructs (like C structs or Rust enums) are translated into these Wasm value types and how they are passed as function arguments and return values.

    Understanding the Wasm ABI is vital for:

    • Interoperability: Ensuring that modules compiled from different source languages can correctly call each other’s functions and exchange data.
    • Correctness: Guaranteeing that data is interpreted correctly as it crosses the boundaries between the Wasm module and the host or other modules.
    • Toolchain Compatibility: Enabling different compilers and tools to produce Wasm modules that can be linked and executed together.

    The wasm32-unknown-unknown Target

    The wasm32-unknown-unknown is a common target triple used when compiling to Wasm. It signifies a 32-bit Wasm architecture (wasm32) with unknown vendor and unknown operating system. This target is designed to make minimal assumptions about the host environment, making it suitable for environments where there isn’t a well-defined system interface, such as basic web embeddings. Compiling to wasm32-unknown-unknown results in a Wasm module that primarily relies on imports provided by its embedder.

    The C ABI Challenge with wasm32-unknown-unknown

    Historically, the extern "C" ABI used by the Rust toolchain for the wasm32-unknown-unknown target deviated from the emerging standard C ABI for WebAssembly. As highlighted in the Hacker Noon article, this non-standard implementation leaked internal compiler details and could lead to compatibility issues when trying to link Rust-generated Wasm with Wasm compiled from other languages using standard C ABIs (like C/C++ compiled with Clang).

    This divergence was a historical artifact, and while some issues were addressed over time, the fundamental difference remained for the wasm32-unknown-unknown target, unlike other Wasm targets in Rust (like WASI targets) that adopted a more correct ABI definition earlier.

    The Shift to a Standard C ABI in Rust

    To rectify this, the Rust compiler is transitioning to use the standard C ABI definition for the wasm32-unknown-unknown target. This change means that the generated Wasm binaries will adhere to the agreed-upon conventions for passing C-like data types.

    According to the Rust blog post, this transition involves:

    • A future-incompat warning introduced in Rust 1.87.0 (released in May 2025) to alert developers to function signatures that will be affected by the ABI change.
    • A -Zwasm-c-abi=(legacy|spec) flag to allow developers to test their code with the new standard ABI (spec) before it becomes the default.
    • The eventual removal of the flag and the standard ABI becoming the default, expected in the summer of 2025.

    Developers using extern "C" with the wasm32-unknown-unknown target in Rust need to be aware of this change and test their code to ensure compatibility with the new ABI.

    WASI and the Component Model: Towards Higher-Level Interfaces

    While understanding the low-level C ABI is important for interoperability at the function call level, the WebAssembly ecosystem is also moving towards higher-level, more language-agnostic interfaces.

    • WASI (WebAssembly System Interface): WASI provides a standardized set of APIs for Wasm modules to interact with the host system, offering capabilities like file I/O, networking, and access to environment variables. This allows Wasm modules to perform operations traditionally handled by an operating system, making them more capable outside of purely computational tasks.
    • The Component Model: Building on WASI, the Component Model defines a way to structure and compose Wasm modules. It introduces a Canonical ABI, a higher-level agreement on how different components (which can be written in different source languages) can communicate complex data types like strings, lists, and records without needing to understand the low-level memory representation details specific to each source language’s ABI.

    The Component Model and its Canonical ABI are becoming the preferred way to handle interactions between Wasm modules and the host, and between different Wasm modules, abstracting away some of the complexities of the lower-level ABIs like the C ABI. This promotes greater interoperability and allows for more secure and efficient composition of Wasm-based applications.

    Implications for Developers

    For developers working with Wasm:

    • Be Mindful of ABIs: When writing code that will interact across Wasm module boundaries or with the host, be aware of the ABI being used, especially the C ABI for low-level interactions.
    • Test with New Toolchain Changes: If using Rust with wasm32-unknown-unknown and extern "C", test with the new standard C ABI using the -Zwasm-c-abi=spec flag to ensure your code remains compatible.
    • Explore WASI and the Component Model: For building more complex applications that require system interactions or composition of modules from different languages, consider leveraging WASI and the Component Model. These provide a more standardized and robust approach to defining interfaces.
    • Stay Updated on Tooling: The Wasm ecosystem and its tooling are evolving rapidly. Keep your compilers and tools updated to benefit from the latest ABI fixes and features.

    Conclusion

    The WebAssembly ABI is a fundamental aspect of building interoperable and correct Wasm applications. While the wasm32-unknown-unknown target in Rust historically had a non-standard C ABI, the ecosystem is moving towards standardization. Coupled with the advancements in WASI and the Component Model, the future of Wasm development points towards more robust, secure, and language-agnostic ways for modules to interact, unlocking the full potential of this transformative technology.

    Understanding the WebAssembly ABI: Navigating the wasm32-unknown-unknown and the Future Read More »

    The Fermyon-Akamai Partnership

    linux / / April 27, 2025

    The collaboration between Fermyon Technologies and Akamai is a significant milestone in serverless computing. Fermyon’s ultra-fast runtime environment, combined with Akamai’s extensive edge network, delivers serverless functions with unprecedented speed and efficiency.

    Key highlights:

    • Cold Start Times: WASM reduces cold start times to milliseconds, compared to traditional serverless platforms like AWS Lambda, which take 200-500 milliseconds.
    • Global Distribution: Akamai’s edge network ensures low latency and high availability, delivering content in under 100 milliseconds.
    • Developer Experience: The partnership offers a seamless experience, allowing developers to write, upload, and deploy code effortlessly.

    Why WASM is Perfect for Serverless

    WASM addresses critical issues in serverless computing:

    1. Speed: Near-instantaneous cold starts enhance user experience and reduce bounce rates.
    2. Portability: WASM’s platform-neutral design allows code to run anywhere, from browsers to edge devices.
    3. Security: Robust sandboxing minimizes the attack surface, ensuring secure execution.
    4. Efficiency: Lightweight modules consume fewer resources, translating to cost savings and scalability.

    Applications and Use Cases

    WASM’s capabilities open up diverse possibilities:

    • E-commerce: Faster load times improve user experience and conversion rates.
    • AI and IoT: Efficient resource usage makes WASM ideal for real-time decision-making and IoT devices.
    • Compliance: WASM supports data sovereignty and regulatory requirements by running code in specific geographic locations.

    The Road Ahead

    As WASM evolves, its integration with serverless platforms will deepen. The development of the WASI (WebAssembly System Interface) and the component model further enhances WASM’s capabilities, enabling complex applications.

    The Fermyon-Akamai partnership is just the beginning. With its unparalleled speed, security, and flexibility, WASM is set to become the backbone of next-generation serverless computing.

    The Fermyon-Akamai Partnership Read More »

    eBPF: Revolutionizing Security Across Applications, Kubernetes, Mobile, IoT, and Beyond

    artificial intelligence, ebpf, security / / April 27, 2025

    Introduction

    eBPF (extended Berkeley Packet Filter) is a powerful technology that allows users to run sandboxed programs within the operating system kernel. This capability provides unprecedented visibility and control over system behavior without requiring modifications to the kernel source code. Initially designed for network packet filtering, eBPF has evolved into a versatile tool for enhancing security across various domains, including application security, Kubernetes, mobile devices, IoT, and more.

    eBPF for Application Security

    eBPF enhances application security by enabling detailed monitoring and control over internal processes and system calls. It allows developers to enforce security policies that prevent unauthorized access to critical resources. Run Security’s RS Prevent platform, for instance, utilizes eBPF to collect telemetry data directly from the Linux kernel, improving the accuracy of threat identification and reducing false positives.

    Key benefits of eBPF in application security include:

    • Real-time Threat Detection: eBPF facilitates deep packet inspection and traffic filtering, enabling the detection of irregular patterns indicative of DDoS attacks, unauthorized access, or data exfiltration attempts.
    • Runtime Analysis: eBPF automates the triage of vulnerabilities by verifying if a vulnerable code path exists within the application’s runtime context.
    • Precise Control: eBPF allows for fine-grained control over application processes and system calls, enhancing security policies.

    eBPF in Kubernetes

    In Kubernetes environments, eBPF provides deep visibility into network traffic and application performance, making it essential for monitoring, auditing, and traffic routing. It allows for efficient management of containerized applications and helps ensure that processes run optimally.

    eBPF aids Kubernetes management by:

    • Deep Observability: Providing real-time insights into networking, CPU usage, memory, and system calls.
    • Enhanced Security: Enforcing fine-grained security policies directly in the kernel, securing pod-to-pod and external communications.
    • Optimized Performance:1 Operating with minimal overhead, reducing the need for intrusive agents or sidecars.

    Tools like Cilium, Falco, and Inspektor Gadget leverage eBPF to enhance security and observability within Kubernetes clusters.

    eBPF in Mobile Devices

    eBPF plays a crucial role in modern mobile operating systems like Android. It is used for network traffic monitoring, firewalling, and high-speed packet processing.

    Specific use cases in Android include:

    • Data Usage Accounting: Monitoring and controlling data usage by applications.
    • Network Restrictions: Implementing firewall rules and network restrictions to save power in battery saver mode.
    • Packet Processing: Handling high-speed packet processing tasks like tethering and IPv4 connectivity over IPv6 networks.

    eBPF in IoT

    In the Internet of Things (IoT), eBPF enhances the observability and security of connected devices. Its ability to monitor system behavior at a granular level and capture real-time events makes it ideal for securing IoT environments.

    eBPF helps in:

    • Real-time Observability: Tracking system calls and kernel events to monitor performance and identify issues.
    • Security Monitoring: Detecting malicious activities like unauthorized file access and enforcing security policies.
    • Performance Optimization: Monitoring resource usage to spot inefficient code or misconfigurations.

    The Future of eBPF in Security

    The future of eBPF in security is promising, with potential applications in AI-driven threat detection and automated security policy enforcement. It is expected to become a standard tool for security professionals, providing deeper insights and control over system behavior.

    Key trends include:

    • AI Integration: Combining eBPF with AI and machine learning to detect anomalies and respond to threats in real-time.
    • Windows Support: The upcoming release of eBPF for Windows will expand its applicability across different operating systems.
    • Enhanced Security Measures: Using eBPF to create security systems that operate on more context and with a better level of control.

    eBPF and AI Solutions

    The integration of eBPF with AI offers significant potential for enhancing security. By leveraging eBPF for real-time data collection and AI for pattern matching and anomaly detection, security systems can achieve unprecedented levels of accuracy and efficiency.

    Examples of eBPF and AI integration include:

    • Anomaly Detection: Using AI/ML algorithms to analyze network behavior and identify irregularities.
    • Threat Detection: Combining eBPF’s real-time data collection with AI to detect vulnerabilities and automatically correlate CVEs.
    • Automated Response: Developing systems that can automatically respond to security threats based on AI-driven analysis of eBPF data.

    Conclusion

    eBPF is revolutionizing security by providing unparalleled visibility and control over system behavior. Its applications span across diverse domains, including application security, Kubernetes, mobile devices, and IoT. As eBPF continues to evolve, particularly with the integration of AI, it is poised to play an increasingly critical role in safeguarding modern computing environments.

    eBPF: Revolutionizing Security Across Applications, Kubernetes, Mobile, IoT, and Beyond Read More »

    VMware: Virtualized Intel VT-x/EPT is not supported on this platform (SOLVED)

    Android, cuttlefish, linux, microsoft, windows / / March 21, 2025

    I had to allow nested virtualization to run an emulator on top of the guest Linux VM in VMware.
    I run Windows 11 PRO host on Intel 12 generation CPU machine. Just checking the nested virtualization box in VMware VM config was not enough:

    With this box switched on, when trying to run the VM I was getting that error: Virtualized Intel VT-x/EPT is not supported on this platform.

    If you experience the same error here is what I did to make it work on my machine:

    1. Open Windows Features and check that both Hyper-V and Windows Hypervisor Platform are not checked (OFF)

      Some sources state that you might need to disable Windows Sandbox as well, but for me it was not required.

      2. Search for “Core Isolation” in Windows search box. Make sure that Memory Integrity is set OFF

      3. Open command line terminal (type “cmd” in the search box) as Administrator and run:

      msinfo32/system

      Click on System Summary and at the right-hand window look for “Virtualization-based Security”

      Mine was showing “Running”. “Not enabled” that is displayed at the above screenshot is the desired result which I get after making the changes listed here.

      If you are seeing “Running” in the above screenshot it is OK. Just follow the below steps to change it.

      4. In the same ‘cmd’ window, run:

      bcdedit /enum {current}

      and check the status of hypervisor. If it is not showing “off”, run:

      bcdedit /set hypervisorlaunchtype off

      5. Run Power Shell as an Administrator and enter there:

      Disable-WindowsOptionalFeature -Online -FeatureName VirtualMachinePlatform
      Disable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-All

      6. Reboot. When rebooting, check that your BIOS is set to support nested virtualization

      7. Run again “cmd” and call for

      msinfo32/system

      it should now say “Virtualization-based Security”: Not Enabled

      8. Run your VM with nested virtualization switched on.
      It should now work. Enjoy!

      References

      Some incomplete information is available here

      VMware: Virtualized Intel VT-x/EPT is not supported on this platform (SOLVED) Read More »

      How to Create a New Admin User for WordPress using the WP Database: Cloudways, GoDaddy, PHPAdmin, command line or else

      Uncategorized / / January 8, 2025

      The procedure is the same whatever GUI or command line access you got to the DB.

      1. In “wp_users” table, create a new user either via GUI or by INSERT SQL statement. Here is a sample with Cloudways GUI, but the same can be reproduced with any user interface. For Cloudways GUI, make sure that in “user_pass” you selected “md5” and put in the clean password. Note the record ID for the new user that was created for you. You will need it for the next step.

      2. In “wp_admin”, create 2 new records

      Record #1

      user_id: <the id of the new user you created at step 1>

      meta_key: wp_capabilities

      meta_value: a:1:{s:13:”administrator”;b:1;}

      Record #2

      user_id: <the id of the new user you created at step 1>

      meta_key: wp_user_level

      meta_value: 10

      With these 3 new DB records you should be able to access your WP as and admin user ‘abc” and password “HelloWorld!!!”.

      How to Create a New Admin User for WordPress using the WP Database: Cloudways, GoDaddy, PHPAdmin, command line or else Read More »