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Defender

Microsoft Windows Дефендер тизимидаги хавфли заифликларни бартараф этди
Winsage
May 23, 2026

Microsoft Windows Дефендер тизимидаги хавфли заифликларни бартараф этди

Microsoft has identified two significant vulnerabilities in Windows Defender, specifically related to the Malware Protection Engine, which could allow denial-of-service attacks. These vulnerabilities could destabilize the security mechanism of Windows. Microsoft has released patches in versions 1.1.26040.8 and 4.18.26040.7 of the Malware Protection Engine to address these issues. Users with automatic updates enabled will receive these patches without further action, but it is recommended that users manually check for updates in the Windows Security settings. There is currently no evidence that these vulnerabilities have been exploited in real-world scenarios.
Microsoft confirms two major Defender security issues — so update now or face possible attack
Tech Optimizer
May 22, 2026

Microsoft confirms two major Defender security issues — so update now or face possible attack

Microsoft has addressed two critical zero-day vulnerabilities in its Defender antivirus software: CVE-2026-41091 (privilege escalation) and CVE-2026-45498 (denial of service). The patches were delivered through Malware Protection Engine version 1.1.26040.8 and Antimalware Platform version 4.18.26040.7. Users are advised to verify their software versions to ensure they have the latest updates. Both vulnerabilities have been included in the Cybersecurity and Infrastructure Security Agency's Known Exploited Vulnerabilities catalog, requiring federal agencies to patch them or stop using the affected software by June 3.
Microsoft Defender Zero-Day Vulnerabilities RedSun and UnDefend Actively Exploited on Windows 10, 11, and Server (April 2026 CVE Analysis)
Winsage
May 21, 2026

Microsoft Defender Zero-Day Vulnerabilities RedSun and UnDefend Actively Exploited on Windows 10, 11, and Server (April 2026 CVE Analysis)

In April 2026, two zero-day vulnerabilities, RedSun and UnDefend, were discovered in Microsoft Defender, affecting Windows 10, Windows 11, and Windows Server platforms. These vulnerabilities allow attackers to escalate privileges to SYSTEM and bypass Defender’s protections. RedSun exploits a flaw in Defender's remediation process, enabling low-privileged users to overwrite critical system files. UnDefend allows attackers to disrupt Defender’s updates, keeping it outdated and ineffective. Both vulnerabilities are actively being exploited, with attackers leveraging them to gain persistent access and deploy ransomware. The primary targets are organizations using Windows systems with Defender enabled, particularly in sectors like finance, healthcare, and government. Mitigation strategies include applying updates for related vulnerabilities, monitoring for suspicious activities, and implementing additional security measures.
Nvidia tells users to update GPU drivers now or face possible attack — here's what we know
Tech Optimizer
May 21, 2026

Nvidia tells users to update GPU drivers now or face possible attack — here’s what we know

NVIDIA has released an update to its GPU display drivers that addresses 14 vulnerabilities across its product lines, including GeForce, RTX, Quadro, Tesla, NVS, vGPU, and Cloud Gaming software. The most critical vulnerability is CVE‑2026‑24187, a high-severity use-after-free bug rated 8.8 out of 10, which could allow code execution, privilege escalation, data theft, or system crashes. Linux systems are vulnerable due to improper access to GPU resources at the kernel level, while Windows systems are at risk from a timing flaw. Two vulnerabilities in NVIDIA’s Unified Virtual Memory subsystem on Linux could lead to denial-of-service attacks without elevated permissions. The vGPU software also received patches for vulnerabilities in its virtual GPU manager component. Users can download the updated drivers from the NVIDIA Driver Downloads page or the NVIDIA Licensing Portal, with Windows users needing version 569.49 or newer and Linux users needing version 590.48.01. Users are advised to maintain their antivirus programs for enhanced security. NVIDIA thanked external security researchers for their responsible disclosure of these vulnerabilities.
Microsoft shares mitigation for YellowKey Windows zero-day
Winsage
May 20, 2026

Microsoft shares mitigation for YellowKey Windows zero-day

Microsoft has addressed the YellowKey vulnerability, a zero-day flaw in Windows BitLocker identified as CVE-2026-45585. This vulnerability allows unauthorized access to BitLocker-protected drives through a specific exploitation process involving 'FsTx' files. The flaw was disclosed by an anonymous researcher known as 'Nightmare Eclipse.' Microsoft has released mitigation strategies, including removing the autofstx.exe entry from the Session Manager's BootExecute REGMULTISZ value and reestablishing BitLocker trust for WinRE. Additionally, users are advised to change BitLocker settings from "TPM-only" to "TPM+PIN" mode, requiring a pre-boot PIN for drive decryption, and to enable "Require additional authentication at startup" for unencrypted devices.
Linux Vs. Windows: Which Is Better For Your PC?
Winsage
May 20, 2026

Linux Vs. Windows: Which Is Better For Your PC?

Recent trends show growing discontent among Windows users due to instability from updates, leading Microsoft to allow users to pause updates. Approximately half a million users have migrated from Windows to alternatives. Windows, dominant since 1985, offers unmatched software and hardware support, making it reliable for professionals, especially in work, editing, and gaming, provided hardware specifications are met. Windows Defender contributes to its security, maintaining its global leadership despite update issues. Compatibility is a key advantage, as Linux systems with NVIDIA hardware often face stability challenges. Linux is gaining popularity due to the absence of subscriptions and advertisements, and user-friendly distributions like KDE and GNOME have made it more accessible. Distributions such as CachyOS, Bazzite, and Mint cater to different user needs, while advanced options like Gentoo and innovative environments like Hyprland appeal to technically inclined users. However, application support on Linux can still be problematic, although tools like Wine and Proton have improved compatibility for many applications.
Avast Free Antivirus for US users: core features explained
Tech Optimizer
May 19, 2026

Avast Free Antivirus for US users: core features explained

Avast Free Antivirus is a free security application that provides essential malware protection and additional tools for Windows, macOS, Android, and iOS. It blocks malware and suspicious websites using real-time scanning and integrates with the operating system's security center on Windows. Key features include file shield scanning, web and mail shields, and ransomware-related shields on select platforms. It is available for free download in the US and is popular among home users, families, students, and individual professionals. Avast competes with other antivirus vendors like McAfee and Bitdefender and is often reviewed positively by tech outlets. While it offers core protections, advanced features require paid subscriptions. Users can conduct various types of scans and utilize browser extensions to assess site safety. The software is designed to coexist with Windows built-in security features, but experts advise using additional security measures for online banking and shopping.
Windows Firewall stands between you and greasy delight
Winsage
May 19, 2026

Windows Firewall stands between you and greasy delight

A fast-food venue in Sheffield's Centertainment is experiencing a glitch on its order progress screen due to a notification from the Windows Defender Firewall, indicating that some software is attempting to breach the kitchen's digital defenses. The pop-up message cannot be dismissed by customers and highlights the restaurant's reliance on technology. The Windows Defender Firewall has been a part of digital security since Windows XP and has evolved significantly over time. The incident suggests potential misconfigurations within the restaurant's system and raises questions about opportunities for branding enhancement.
I got tired of hunting through Windows for every setting, so I built my own control center
Winsage
May 17, 2026

I got tired of hunting through Windows for every setting, so I built my own control center

The utility created simplifies Windows management by consolidating various settings and diagnostics into a single interface. It provides an overview of system metrics such as DNS latency, system uptime, and temporary file accumulation. The application includes dedicated pages for health checks, network insights, services, scheduled tasks, drives, drivers, power plans, gaming toggles, privacy settings, and taskbar configuration. Each diagnostic is executed through PowerShell scripts, with results displayed in a user-friendly format. The utility maintains transparency by creating .reg backups before modifying the registry and allows users to revert changes easily. It is open-source, lightweight, and designed for personal use rather than debloating. The program's structure enables users to inspect and modify scripts, ensuring clarity and control over system adjustments.
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