Network Security
system security Linux network
system security Linux network The romanticized image of the digital nomad – a laptop on a sun-drenched balcony – rarely accounts for the actual friction of maintaining a professional development environment on the move. . The friction is amplified with Linux. We are looking for a setup that respects our kernel configurations, handles volatile network handovers, and maintains a strict security posture without the hand-holding of a consumer-grade OS – so, put simply, more than just a laptop and a sunny deck. The hardware is...
May 26, 2026
Server Securityopen-source Linux administration
open-source Linux administration Cron has existed in Unix and Linux environments for decades, handling backups, cleanup scripts, patching jobs, log rotation, monitoring tasks, and other maintenance work that administrators do not want to run manually. Most Linux servers rely on it constantly, which is exactly why attackers continue abusing it for persistence after a system has already been compromised. . Persistence through cron is not complicated. Attackers do not need a rootkit or advanced malware framework to maintain...
May 25, 2026
Vendors/Productssecurity breach linux
security breach linux A major internal repository breach at GitHub has exposed a critical and overlooked blind spot in Linux supply chain security. Kernel exploits, exposed SSH services, weak firewall rules, and vulnerable daemons dominated the Linux threat model for years, and in many environments, they still matter. But recent supply-chain incidents involving GitHub ecosystems, npm packages, and malicious developer tooling point somewhere else entirely: the developer workstation. . The breach matters because...
May 21, 2026
Security Trends access control multi-tenant
access control multi-tenant Linux administrators often face an ugly choice in the cloud: prioritize convenience and cost-efficiency by sharing infrastructure, or sacrifice those benefits for the sake of total isolation. Most modern Linux workloads don't live on their own private servers anymore. They live in shared environments like Kubernetes clusters, where multiple teams and services run side-by-side. It sounds efficient, and it usually is. . But cloud isolation isn't as ironclad as it looks on the diagram. If you...
May 21, 2026
Vendors/Productsincident response cloud security
incident response cloud security Managed Extended Detection and Response (MXDR) has become one of the most sought-after security services in the enterprise market — and with good reason. It promises the holy grail: broad visibility across endpoints, network, cloud, email, and identity, combined with the 24/7 human expertise most organizations simply cannot build in-house. . However, the rapid growth of the market has produced a wide range of providers whose capabilities vary considerably beneath the surface. Choosing the...
May 19, 2026
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security advisoryupdatesecurity patchWine 10.0 Released: Security Updates and Performance Enhancements
With the recent release of Wine 10.0 , we now have an updated and powerful tool for running Windows applications on our Linux systems. This new version features over 6,000 improvements designed to improve performance, compatibility, and the overall user experience. . Key enhancements in Wine 10.0 include critical security patches and performance boosts that can fortify your infrastructure against vulnerabilities. However, new features and significant changes always have the potential to introduce new attack vectors. Thorough testing and validation are paramount before transitioning to this new version. Reviewing the official release notes and engaging with the Wine community will provide vital insights, ensuring you can deploy this update confidently while maintaining a vigilant stance on security. In this article, I'll delve into the key aspects of Wine 10.0, exploring how it can be integrated effectively while ensuring that security remains uncompromised. Understanding The Significance of Wine 10.0 Wine is a compatibility layer enabling users to run Windows apps on non-Windows platforms like Linux. Wine 10.0 marks an important milestone, bringing over 6,000 improvements and the fruits of years of development efforts, providing users with a more capable platform. This year's iteration strives to ensure applications run more smoothly while simultaneously creating an improved user experience that's seamless and consistent across platforms. Enhanced Security Measures One of the most crucial aspects of any software update is the introduction of new security measures and patches. With Wine 10.0, security admins should be on the lookout for these critical updates. Although specifics will vary, general improvements can be expected in areas like handling system calls, memory management, and application sandboxing. These updates are designed to patch vulnerabilities that, if left unaddressed, could potentially be exploited by malicious actors. Therefore, promptly applying these patchesand understanding their impact is essential for maintaining a secure working environment. Conducting a thorough review of the official release notes will help you identify and prioritize these critical security aspects. Performance and Compatibility Improvements Beyond security, Wine 10.0 brings significant performance enhancements. These improvements are particularly important for resource-intensive applications that have previously experienced sluggish performance on Linux. With a more optimized compatibility layer, applications are likely to run more efficiently, making them more responsive and reducing system strain. Compatibility updates mean that a broader range of Windows applications can function better on Linux. This benefits administrators and end-users relying on specific Windows applications for daily tasks. It's a step towards reducing the friction often associated with cross-platform compatibility, enabling smoother and more reliable operation of these applications. Thorough Testing and Validation With such a substantial update, it's crucial not to rush into deployment. Testing and validation are indispensable steps in your deployment strategy. Start by setting up a controlled testing environment where you can run all necessary Windows applications under Wine 10.0. Monitor their behavior and performance closely compared to the previous version to catch any anomalies or issues early on. During this phase, focus also on assessing any security implications. Look out for new permission requests or changes in how applications access system resources. Ensuring that these changes do not inadvertently create security holes is vital. After thorough testing and validation, you should begin rolling out Wine 10.0 to your production environment. Monitoring and Post-Deployment Practices Even after a successful deployment, your job isn't over. Ongoing monitoring is crucial to ensure that no unexpected issues arise. Keep an eye on system logs and application behavior to detect anyanomalies quickly. Tools that can help automate this monitoring can be particularly useful, alerting you to issues before they escalate. Post-deployment, it's also wise to continue engaging with the Wine community and staying up to date with any additional patches or updates that might be released. As with any significant software deployment, being vigilant and proactive is key to maintaining a secure and efficient environment. Documentation and Training While technical updates and community engagement are important, don’t overlook the value of thorough documentation and training. Make sure that all security protocols and changes associated with the Wine 10.0 update are well-documented. This ensures that everyone on your team is on the same page and understands how to maintain the security and efficiency of your applications. Additionally, training sessions for your team can be beneficial, particularly if the update introduces new features or changes workflow processes. Equip your team with the knowledge they need to leverage the new capabilities of Wine 10.0 fully, while also maintaining the security protocols necessary to protect your environment. Our Final Thoughts on Wine 10.0's Impact on Windows App Security & Performance on Linux Adopting Wine 10.0 is an invaluable opportunity to improve the performance, compatibility, and security of Windows applications running on Linux. By carefully testing and validating this new release while engaging with its community and ensuring proper post-deployment monitoring as well as comprehensive documentation and training to facilitate its secure introduction, you can ensure a successful transition process. Remember that successful deployment involves more than simply installing updates; it must also involve understanding their effect on your overall security posture. You can freely download Wine 10.0 here. We'd love to hear what you think of these updates @lnxsec! . Wine 10.0 introduces vital security enhancements and improvedefficiency for Windows programs running on Linux environments.. Windows App Security, Linux Performance, Wine Enhancements, System Compatibility, Linux Security. . Brittany Day
Jan 23, 2025
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Security Projects
79
kernel updatesecurity featureperformance improvementLinux 6.13 Update: Unveiling NVMe Features and Security Impacts
Linux 6.13 kernel development has unlocked promising storage technology advancements with numerous block subsystem improvements, particularly regarding NVMe (Non-Volatile Memory Express) support. These enhancements seek to boost performance, security, and manageability, so Linux administrators must stay abreast of and prepare for these updates.. I'll explain what you can expect in Linux 6.13, the security implications of these changes and additions, and how to upgrade your Linux kernels when this release becomes available. Understanding NVMe 2.1 Specification Compliance One major upgrade in Linux 6.13 is its kernel's compliance with the NVMe 2.1 specification, published last August and offering various features like live migration of PCIe NVMe controllers, enhanced security measures, and manageability improvements. By adhering to this standard, Linux stays at the forefront of storage technology while expanding its ability to support next-gen hardware. Compliance with NVMe 2.1 brings significant security improvements, especially by strengthening data protection and encryption mechanisms within NVMe storage devices. These enhancements are essential for administrators looking to protect sensitive information while taking advantage of high-speed storage solutions. Moreover, their implementation not only strengthens Linux's security framework but also ensures its ability to take full advantage of advanced storage technologies. Key Additions in Linux 6.13 NVMe & Their Implications The Linux 6.13 NVMe code introduces several notable features mandated by NVMe 2.1 specification that significantly affect system management and performance. Notably, integration of ID Namespace and Command Sets facilitates better organization of storage resources by giving administrators more granular control over configurations. This allows for more precise and efficient storage handling, improving system operations. Furthermore, the new support for rotational media ensures that the kernel accurately recognizesand manages storage devices like hard drives. This feature is especially beneficial in mixed storage environments because it enables optimal configuration of storage hierarchies to accommodate various storage types' performance and capacity needs. Optimized host and memory buffer allocation improves data transfers, giving systems running Linux 6.13 an edge in handling intensive workloads and large volumes of data. By optimizing memory buffer allocation, the kernel can significantly boost system performance and reliability, making it better equipped to deal with intensive workloads and volumes of data. These key additions collectively boost functionality and efficiency. Security Impact for Linux Administrators The advances introduced in the 6.13 kernel significantly strengthen the security posture of Linux systems. NVMe 2.1 compliance streamlines processes to increase productivity and includes advanced security protocols to safeguard against unauthorized data access or breaches . Features like Persistent Reservation and Tracing provide practical tools for upholding rigorous access controls and comprehensive audit trails, essential elements in systems requiring high-security compliance with data protection regulations. Volatile Cache Detection mechanisms within the kernel help mitigate data loss risks for systems engaged in continuous read/write operations, further strengthening security and reliability within Linux environments. Upgrading to Linux 6.13 Linus Torvalds' development pattern dictates a release schedule for the 6.13 kernel. As soon as these changes have been sent out, we should see it made available within several months, followed by the release of candidates. This gradual approach gives administrators ample time to prepare for this upgrade. Testing pre-releases in a controlled environment ensures compatibility and performance while helping identify potential problems before rolling them out in production environments. Additionally, it's essential to assess hardwaredependencies to see whether current setups can fully utilize NVMe 2.1 features and rotational media support, minimizing compatibility issues while ensuring a smooth transition. Finally, strategizing deployment timelines to coincide with business operations is critical. Proper planning ensures minimum downtime during upgrades, ensuring a seamless switch to Linux 6.13 for all stakeholders involved. Our Final Thoughts on NVMe Enhancements in the 6.13 Kernel The Linux 6.13 kernel update promises to significantly upgrade Linux administrators' experience, especially with its enhanced NVMe support, which will bring improved performance and increased security. By understanding and planning for these changes, administrators can ensure they benefit from this kernel release while protecting their systems and taking advantage of cutting-edge storage technology. What changes are you most excited about in this upcoming release? Connect with us @lnxsec and let us know! . Dive into the latest NVMe advancements in the Linux 6.13 kernel. Examine the new security features, performance enhancements, and strategies for upgrading your systems.. Linux Kernel 6.13,NVMe Enhancements,Storage Technology,Security for Administrators. . Brittany Day
Nov 21, 2024
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Security Projects
79
security advisorysecurity enhancementsecurity patchLinux Kernel: Performance Boost and Security Upgrade from Torvalds' Patch
Linus Torvalds, the revered leader of the open-source movement, has shown that even minute changes can make a significant difference. A relatively small recent code modification made by the Linux kernel developer has significantly improved Linux's performance. . The change is known as x86/uaccess" and it avoids barrier_nospec() when copying 64-bit () . This minor change, initially submitted by Red Hat developer Josh Poimboeuf and revised by Torvalds, addresses critical security issues while improving performance. I'll examine the essence of this patch, the types of attacks it protects against, its security and performance impacts, and the broader implications of this patch for us Linux users. Understanding The Essence of This Patch This recent patch aims to improve Linux's performance by changing how the kernel handles copying operations from the user space. It mitigates the usage of the barrier_nospec(). This API was designed to thwart speculative execution attacks such as Meltdown and Spectre, which were first made public in 2018. Modern CPUs use speculative execution to increase efficiency. However, it can also expose security vulnerabilities. Torvalds' patch replaces barrier_nospec() with pointer masking. This method returns all 1s when the copy_from_user() attempts to access an invalid address. This approach offers a measurable performance boost while maintaining security. Addressing Meltdown and Spectre Attacks Meltdown and Spectre attacks are side-channel attacks that exploit the CPU’s speculative processing to gain access to sensitive data. These vulnerabilities shocked the IT community, leading to a widespread effort to patch and defend themselves against these threats. These security measures often result in significant overhead and a noticeable performance degradation. This trade-off is controversial, especially in environments where performance matters most. The Register reports, "Defending these attacks is a necessary evil. Running web servers and thelike is a primary usage of Linux, and such boxes must be locked down against every conceivable attack - even at the cost of disabling performance-enhancing features." Performance Improvements This patch is essential because it combines security and performance. The patch, which avoids the barrier_nospec() and uses pointer masking to improve the per_thread_ops, achieves a 2.6% increase in the benchmark. The kernel testing robot verified this. This is not a mere statistical anomaly but a vital improvement for systems that run high-thread workloads such as web servers or data processing applications. Torvalds acknowledged that the code change positively impacted performance, stating, "The kernel testing robot reports a 2.6% improvement in the per_thread_ops benchmark," which shows the real-world effect of the seemingly minor change. Security and Performance Trade-Offs Balancing performance and security is one of the most persistent challenges for operating system developers, particularly when it comes to a platform as popular as Linux. In response to Meltdown, Spectre, and other vulnerabilities, mitigations were implemented to prioritize performance at the expense of security. Torvalds has been known to be critical of performance-killing methods. It is important to note that the new patch does not force administrators to choose between performance and security. The patch reduces the risk of speculative execution by making a small but strategic change to how invalid addresses are treated in copy_from_user(). This is done without the usual overhead associated with security patches. Broader Implications for The Linux Community This patch demonstrates Torvalds' deep understanding of low-level x86 architecture and his ability to make decisions that benefit the broader Linux community. The Register reports, "Very few people have his level of technical knowledge, particularly of the x86 Architecture—and most of those who work for large chip vendors." They are under NDA and cannottalk about it. Torvalds’ background at chip vendor Transmeta, where he was employed for his low-level expertise in building Crusoe chips, illustrates his extensive knowledge in this area. His contributions will ensure that Linux is a safe and performant platform for users and businesses worldwide. Our Final Thoughts on Torvalds' New Patch Linus Torvalds' small but significant patch is a testament to modern operating systems' delicate balance between performance and security. The patch addresses critical vulnerabilities and improves performance. It is a practical solution to one of the most pressing problems in the tech world. This recent patch boosts performance for administrators and developers and emphasizes the need to remain vigilant and innovative in the face of evolving security threats. Linus Torvalds, the creator of Linux, continues to shape its future with this patch. It ensures that Linux remains secure , robust, and efficient in a technologically changing landscape. . The latest update from Torvalds boosts Linux efficiency while fortifying security measures to counteract risks posed by Spectre and Meltdown vulnerabilities.. Linux Kernel, Speculative Execution, Performance Improvement, Security Enhancement. . Brittany Day
Nov 11, 2024
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Security Projects
79
security toolsystem updateoperating systemParrot OS 6.2 Release: New Security Tools and Performance Enhancements
The ParrotOS ecosystem continues to expand and improve with the release of Parrot OS 6.2 , an update designed to boost performance, increase stability, and provide new security features. It offers numerous upgrades and tools to improve security and privacy issues, solidifying ParrotOS as a premier option among ethical hacking distributions. . To help you understand the significance of this release and determine if you'd like to test it out yourself, I'll explain what's new in ParrotOS 6.2 and how you can upgrade to or install it. Let's begin by understanding what makes ParrotOS an ideal choice for ethical hackers and security-conscious Linux admins. Understanding ParrotOS and its Security & Privacy Benefits ParrotOS is a Debian-based operating system tailored for security, development, and privacy protection. Used by cybersecurity professionals, ethical hackers, and developers looking for a reliable yet secure system, ParrotOS boasts an abundance of preinstalled tools for penetration testing , digital forensics analysis, software development, and protection of privacy protection, among other tasks. ParrotOS' primary strength lies in its dedication to security and privacy. Anonsurf , an encryption tool that channels all system traffic through Tor, ensures anonymized web browsing while shielding user data against tracking or snooping. Furthermore, ParrotOS provides secure defaults, cryptographic tools, and a comprehensive firewall setup to help protect its users against unauthorized access and malicious threats. What’s New in ParrotOS 6.2? Users will discover numerous improvements in ParrotOS 6.2's latest release that aim to elevate performance, security, and usability. One notable update comes with adopting Linux Kernel 6.10.11 to replace the previous version, 6.5.13. This new kernel provides improved hardware support while boosting performance and offering essential security patches. Initramfs-tools and libc have also received updates to ensure enhanced compatibility with modernhardware and software while enhancing system security and stability. New Rocket Tool (source: parrotsec.org) As part of this release, Anonsurf was upgraded from version 4.2 to 5.0.0, giving users greater control over anonymity settings and keeping data secure in cases where surveillance or tracking could pose threats. Numerous applications have been updated with newer versions to improve functionality and incorporate security patches , such as Firefox ESR's transition from version 115.11 to 128.3 with significant performance and security enhancements. Chrome has advanced from version 125 to 129, featuring the most up-to-date web standards and security features. LibreOffice Suite now stands at version 24.8.2, up from 24.2.3, for improved document security and features to increase productivity. Enhancements also extend to system tools, with several critical ones receiving version upgrades. Airgeddon , popular among wireless network auditors, was upgraded from version 11.21 to 11.30 to provide improved support for WiFi testing and security checks. Bind9 also advanced from 9.18.24 to 9.18.28 to provide safer DNS resolutions. One of the most impressive additions in this release is Rocket , an exciting Python tool crafted using PyQt6 that facilitates easy Docker container deployment across ParrotOS and other Linux distributions, Windows, and macOS operating systems. Rocket makes quick setup environments for security tools hosted on Docker Hub or additional repositories possible through easy download and execution of Docker containers. Security remains at the core of ParrotOS 6.2 with various updates designed to reinforce user safety. Improvements include timely patching of vulnerabilities with Linux kernel updates and critical packages to reduce attack vectors while providing a safe environment for essential operations. User-facing apps like Firefox, Chromium, LibreOffice, and VLC benefit from frequent updates, including security fixes that safeguard against attacks that might threatensystem integrity. Furthermore, its upgraded suite of privacy tools ensures that users can navigate anonymously online and protect against surveillance or network assaults. Rocket's integration marks a groundbreaking advancement towards containerized security applications. These provide isolated environments that further protect applications by keeping them sandboxed. Rocket makes deployment easy for users, highlighting ParrotOS's ongoing commitment to secure systems while providing seamless switching between various security tools without risk to the host system. Next Steps: Upgrading to or Installing Parrot OS 6.2 For users looking to upgrade from a previous version, ParrotOS offers a straightforward method. You can utilize the APT package manager to upgrade an existing installation using the sudo apt update && sudo apt full-upgrade commands. It is always advisable to back up your data before upgrading to protect against potential data loss. For those using significantly older versions, a fresh installation might be more beneficial for a cleaner and more reliable experience. To install ParrotOS 6.2 fresh, download the ISO files from the official ParrotOS website . Avoid using third-party download sources, as they might pose a security risk. The official download page provides direct links and torrent files to bypass network restrictions. Our Final Thoughts on the Parrot OS 6.2 Release The release of ParrotOS 6.2 marks a significant milestone in the realm of security-focused operating systems. With its extensive upgrades, new features like Rocket, and an unwavering commitment to security and privacy, ParrotOS continues to empower ethical hackers, cybersecurity professionals, and privacy-conscious users. This version not only enhances the OS's existing capabilities but also sets a foundation for future innovations in secure computing. Whether you are a veteran user or new to ParrotOS, version 6.2 offers a robust, safe, and versatile platform designed to meet the evolving challenges ofthe digital age. . Parrot OS 6.2 signifies a major advancement in security-focused operating systems with improved performance, stronger security measures, and enhanced usability features.. ethical hacking tools, Debian-based OS, Parrot OS features, secure system. . Anthony Pell
Oct 24, 2024
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Security Projects
78
performance improvementLinux updateXFSMicrosoft CBL-Mariner Update: New Support for XFS as Root Filesystem
In December last year, Microsoft's exFAT on Linux received some really hefty gains in terms of performance thanks to Sony. Internal tests showed close to 60% gains in some instances . Speaking of file systems, Microsoft has now added support for XFS as root file system type for CBL-Mariner, which is Microsoft's Linux OS for Azure 1P services and edge appliances. . The change was introduced with the latest version 2.0.20230426 for CBL-Mariner where the changelog notes "Adding XFS as a root filesystem type". Over on the pull requests section of the GitHub page, developer AZaugg has provided a summary of the change (via Phoronix) On that note, other file systems on Linux are also getting performance improvements and optimizations. These include F2FS, Btrfs, and EXT4 . Besides these, the Linux implementation of Microsoft's NTFS file system (NTFS3) is also set to receive optimizations. . Microsoft has enhanced CBL-Mariner by enabling XFS as the primary file system, boosting performance metrics for Azure offerings. Discover more insights.. XFS Root File System, CBL-Mariner Update, Performance Enhancements. . LinuxSecurity.com Team
May 10, 2023
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Vendors/Products
79
security featureperformance improvementkernel enhancementLinux 6.3 Releases Enhanced Security Features And Multi-Actuator Support
The latest version of Linux , Linux 6.3, has been released following a "nice, controlled release cycle," according to project boss Linus Torvalds . The release cycle required seven release candidates, which were supported by helpful developer behavior. . However, Torvalds cautioned that "something nasty couldn't have been lurking all these weeks," urging real-world testing to ensure the release is ready for prime-time consumption. Despite not being a long-term support (LTS) release, Linux 6.3 includes some interesting features that will be beneficial for users. One of the most significant is improved support for multi-actuator hard disk drives. This is becoming increasingly important as more hyperscale cloud operators adopt these drives, which feature a second set of read/write heads that enable faster performance. With Linux 6.3, the kernel is now better equipped to handle these drives, providing users with improved functionality. Linux 6.3 also includes support for Kernel Address Space Layout Randomization on China's Loongson RISC-V processors. This security feature allows the kernel to load into different areas of memory each time it boots, making it more difficult for attackers to target specific areas. The link for this article located at ghacks.net is no longer available. . Linux version 6.3 brings forward advanced security enhancements and multi-actuator capabilities, pushing for practical evaluations to ensure dependability.. Linux 6.3, Multi-Actuator Support, Security Feature, Kernel Enhancement. . LinuxSecurity.com Team
May 01, 2023
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Security Projects
79
security enhancementopen sourceperformance improvementRust in Linux Kernel: Enhancing Security and Performance
The release candidate for the latest version of the Linux kernel was announced last month, and one of the highlights in the release notes for Linux 6.1 is the inclusion of the initial infrastructure for adding Rust as a language. . Rust has been growing steadily in popularity through the years, and though according to the 2022 Stack Overflow Developer Survey 9 percent of developers use it, it has spent seven years in the top spot for “most loved” language. In this year’s survey almost 87% of developers said they love Rust, which is about 10 percentage points higher than the second-most loved language, Elixir. According to Joel Marcey, director of advocacy and operations for the Rust Foundation, one of the benefits of Rust over C is that it provides security without sacrificing the performance and speed that C provides, the current language for the Linux kernel. One of the key points of the language that people love is that it is memory safe. . The increasing adoption of Go and its integration into cloud computing is set to bring improved scalability and efficiency advantages.. Rust Programming, Linux Kernel Adaptation, Security Benefits, Performance Features. . LinuxSecurity.com Team
Nov 27, 2022
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Security Projects
67
performance improvementsecurity featureslinux kernelLinux 6.1 Update: RNG and Crypto Code Enhancements for Better Security
The random number generator "RNG" and crypto subsystem pull requests have already been submitted for the Linux 6.1 merge window. . Jason Donenfeld of WireGuard fame continues spending a lot of time working to clean-up Linux's RNG code. For Linux 6.1 the RNG code has seen a regression fix come around O_NONBLOCK that broke user-space some two years ago, a performance regression fix, using randomness from hardware RNGs earlier in the boot process, and a variety of other smaller changes to the RNG code that has been undergoing a lot of improvements as of late. The full list of RNG changes for Linux 6.1 can be found via The link for this article located at Phoronix is no longer available. . With the arrival of Linux 6.1, the RNG and encryption modules have undergone significant improvements, focusing on enhanced efficiency and bolstered security protocols.. Random Number Generator, Crypto Improvements, Linux Kernel Enhancements, System Performance. . LinuxSecurity.com Team
Oct 22, 2022
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Cryptography
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