Technology

Microsoft is refreshing Secure Boot certificates to plug security holes before they happen — if you bought a PC last year, you should be set

Source

Tom's Hardware

Published

Feb 10, 2026

TL;DR

AI Generated

Microsoft is updating Secure Boot certificates for Windows PCs to enhance security, with the current certificates set to expire in June 2026 after a 15-year lifespan. New certificates are being distributed through Windows updates for personal users, businesses, and schools. PCs purchased in 2025 or later likely already have the updated certificates, with OEM partners obtaining them since 2024. Users who allow Microsoft to manage updates should receive the new certificates through standard Windows updates. Failure to update certificates may lead to security vulnerabilities and compatibility issues, emphasizing the importance of running supported versions of Windows for optimal performance and protection.

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Linux exploit instantly grants administrator access on most distributions since 2017 — cryptography optimization snafu grants root privileges to local users

A recent Linux exploit, CVE-2026-31431, allows local unprivileged users to gain root access instantly on most Linux distributions since 2017. The exploit affects popular distros like Ubuntu, RHEL, Suse, and Amazon Linux, as well as Windows' WSL2. The vulnerability, discovered by Xint Code researchers, involves a cryptography optimization flaw that grants administrator privileges through a devious attack on the AF_ALG socket. While a patch has been released, some distributions may still be vulnerable, requiring mitigation methods like disabling AF_ALG sockets. The exploit occurs in memory without leaving detectable traces on disk, making it challenging to detect with security software.

Tom's Hardware•

8 hours ago

Windows 11 KB5083631 out with Xbox mode, faster performance (direct download links .msu)

Windows 11 KB5083631 introduces Xbox mode for regular PCs, a more reliable File Explorer, faster startup apps, and more. This optional update can be downloaded via Windows Update or through direct download links provided by Microsoft. The update includes early features from Microsoft's Windows K2 project aimed at enhancing Windows 11. Xbox mode brings a console-like gaming experience to Windows 11, optimized for controllers. Additionally, File Explorer improvements ensure consistent folder views across applications.

Windows Latest•

18 hours ago

The most severe Linux threat to surface in years catches the world flat-footed

A critical Linux vulnerability, named CopyFail (CVE-2026-31431), has been disclosed by security researchers, allowing unprivileged users to gain root access across various Linux distributions. The exploit code, released by Theori, works universally without modification, posing a significant threat to data centers and personal devices. While the Linux kernel security team patched the vulnerability in several versions, many distributions had not yet implemented the fixes at the time of the exploit's release. This flaw enables attackers to execute malicious activities like hacking multi-tenant systems and creating backdoors, emphasizing the severity of the issue.

Ars Technica•

22 hours ago

Crucial Taiwan undersea cable severed by old shipwreck — backup microwave communications activated to keep population connected

A shipwreck off Dongyin island in Taiwan has severed the undersea cable connecting it to Beigan Island, prompting the activation of backup microwave communications to maintain connectivity for the 1,500 residents. The Matsu Islands' strategic location near mainland China and the Taiwan Strait makes them crucial for Taiwan's military presence. While this incident was due to natural causes, it underscores Taiwan's vulnerability in its global connections. Recent suspicions of deliberate undersea cable damage by Chinese ships have led Taiwan to increase defensive measures and penalties for sabotage attempts. Despite wireless backups, physical undersea cables remain essential for reliable and high-bandwidth internet connections.