system security Archives

Winsage

August 14, 2026

‘This one just needs a script’: Researchers find ultimate Windows kill switch which can disable antivirus w…

Researchers from the University of Birmingham and Durham University discovered a vulnerability in consumer DDR4 and DDR5 memory chips, termed "Download more RAM," which allows attackers to misreport memory configuration, potentially doubling the perceived RAM. This manipulation enables unauthorized access to memory allocations, bypassing Windows' Virtualization-based Security (VBS) and Hypervisor-Enforced Code Integrity (HVCI), and disabling antivirus software. The vulnerability affects major manufacturers like Corsair, G.Skill, and ADATA, which collectively hold over 55% of the high-performance memory market. Microsoft has patched the vulnerability, cataloged as CVE-2026-23670, with a medium severity score of 5.7/10, in the April 2026 Patch Tuesday update. Corsair has introduced a feature to enable write protection on their memory modules, and other tools are available for additional protection.

Winsage

August 6, 2026

What Happens To Your Computer If You Skip Windows Updates

Windows operating systems have hidden functionalities and privacy enhancements introduced through regular updates, which are crucial for maintaining system security. Neglecting updates leaves known vulnerabilities open to exploitation by malicious actors, as Microsoft typically addresses security flaws only after they are identified. Windows Update is the primary mechanism for addressing these vulnerabilities. Unpatched systems become targets for cyber threats, leading to severe consequences such as remote code execution, privilege escalation, ransomware attacks, and boot-level compromises. The PrintNightmare vulnerability (CVE-2021-34527) was acknowledged by Microsoft after active exploitation was detected, leading to the release of patches. The WannaCry cyberattack in May 2017 affected over 300,000 computers due to an unpatched SMB flaw, highlighting the risks of outdated systems. Timely updates can prevent vulnerabilities that may lead to ransomware, credential theft, and other compromises. Users are advised to install updates promptly and avoid connecting unsupported versions to the internet.

Winsage

July 29, 2026

Windows 11’s optional July update speeds up the Start menu and taskbar

The optional update KB5101684 introduces updated Secure Boot certificates for a broader range of computers, enhancing system security. It is available for manual installation through the Microsoft Update Catalog and will be released to all users during the upcoming Patch Tuesday in August. After installation, Windows 11 25H2 will have a build number of 26200.8973, and Windows 11 24H2 will have a build number of 26100.8973.

Winsage

July 23, 2026

Microsoft making a new feature mandatory requirement for Windows KMS activation

Microsoft has introduced enhancements to its Windows operating system security, including an update to Entra ID authentication with default passkeys and AI-enhanced security updates. A key advancement is the KMS Hardware-Secured initiative, which uses Trusted Platform Module (TPM)-based attestation to ensure KMS hosts operate on trusted hardware for Windows volume activation. This aims to combat risks from counterfeit KMS servers. Under the new model, KMS hosts will confirm their hardware identity using TPM before activating Windows devices. Starting in August 2026, Windows Server 2025 will provide readiness messaging for KMS host compliance with new security requirements. TPM attestation will be mandatory for KMS Hardware-Secured activation with the upcoming Windows Server 2028 LTSC release. Organizations are advised to prepare for this transition.

Winsage

July 20, 2026

July 2026 Patch Tuesday: KB5101650 Windows 11 Update

On July 14, 2026, Microsoft released cumulative update KB5101650 for Windows 11 versions 25H2 and 24H2, addressing OS Builds 26200.8875 and 26100.8875. This update includes essential security fixes, updates to Secure Boot certificates, and enhanced Remote Desktop Protocol (RDP) defenses against phishing attacks. It consolidates July 2026's security content, addressing known vulnerabilities and introducing functional improvements. The update is critical for minimizing exposure to identified threats and is prioritized for systems managing remote access or nearing certificate expiration. The update enhances Remote Desktop security by supporting SHA-2 certificate thumbprints while retaining SHA-1 for legacy compatibility. It includes new Group Policy options to mitigate phishing risks associated with malicious .rdp files. The curl upgrade to version 8.21.0 incorporates security patches for command-line tools in Windows environments. Secure Boot certificates are automatically updated through Windows updates, ensuring boot security across various hardware. KB5101650 installs primarily through the Windows Update interface, requiring a restart to activate changes. Enterprise environments can use the Microsoft Update Catalog for manual distribution. A temporary restriction affects certain Dell devices with Intel Innovation Platform Framework drivers, which Microsoft plans to address in a future update. The cumulative update resolves a total of 622 Microsoft CVEs, including 416 affecting Windows components. Users are advised to verify and install the update promptly to secure the full suite of improvements.

Winsage

July 20, 2026

I think the latest record-breaking Windows 11 update messed up my monitor

The latest Windows Insider update, KB5101650, is the first to use artificial intelligence to identify and address security vulnerabilities, featuring 570 patches aimed at enhancing system security. Users have reported various display and graphics problems, including performance dips and graphical glitches, following the update. Microsoft has temporarily halted the update for certain Dell PCs due to compatibility issues affecting performance and power consumption. Users are experiencing difficulties reverting the update, and there are concerns about a drop in refresh rates from 400 Hz to 240 Hz.

Tech Optimizer

July 6, 2026

MacPaw Moonlock antivirus review

MacPaw launched Moonlock as a standalone antivirus application in October 2025, building on its existing malware removal module from CleanMyMac. Moonlock focuses on educating users about malware rather than overwhelming them with technical details, following a 'care, not scare' philosophy. Research indicated that 66% of Mac users faced cyber threats last year, with a 67% increase in macOS backdoor variants in 2025. Moonlock Lab has identified new malware variants and maintains a strict zero-logs policy for its VPN. The application requires macOS 13 or later and 515MB of disk space, operates efficiently without significant performance impact, and necessitates a MacPaw account for installation. Support includes a knowledge base and email inquiries, but lacks live chat or phone options. Moonlock competes with ClamXAV, which is cheaper but lacks some features, and Intego Mac Internet Security X9, which offers a network monitor. Moonlock is priced at .95 per year for a single device, nearly double ClamXAV’s price for three devices, but includes additional features like a VPN and network inspection. It also provides a 30-day money-back guarantee.

Winsage

June 23, 2026

In 2011, Microsoft signed the Secure Boot certificates that still sit inside millions of Windows PCs, and the first one expires on June 24, 2026, leaving unupdated machines running normally while future boot-level revocations stop reaching them

Microsoft's Secure Boot certificates, including the Microsoft Corporation KEK CA 2011, will expire on June 24, 2026, followed by the Microsoft UEFI CA 2011 on June 27 and the Microsoft Windows Production PCA 2011 on October 19. New certificates issued in 2023 will replace these older ones. While devices will continue to operate and receive standard Windows updates, they will gradually lose access to critical security updates that protect against boot-level threats. After June 24, the ability to sign new disallowed signature database payloads with the old KEK will be lost, reducing the capacity to revoke compromised bootloaders. Users are advised to keep Windows and firmware updates current, while enterprises may face challenges managing diverse machine inventories for updates.

Winsage

June 19, 2026

MacBook Neo vs Windows Laptops for Cybersecurity Tasks

The laptop has evolved into a crucial tool for cybersecurity, serving as a workstation for malware analysis and daily operations. A debate exists between the merits of MacBook Neo and Windows-based models, with Windows offering flexibility and compatibility, while macOS is favored for stability and build quality. Popular penetration testing tools are available on both platforms, but Windows laptops have an advantage due to better integration with x86 environments and specialized drivers. Virtualization is essential in cybersecurity, and Windows laptops with higher RAM provide a better experience for running multiple virtual machines compared to the non-upgradable RAM of the MacBook Neo. Intensive tasks can strain systems, necessitating efficient resource management, especially on the MacBook Neo. Most malware is designed for Windows, making it crucial for analysts to be familiar with Windows-specific tools and features. The MacBook Neo is beneficial for tasks like working with event logs and writing automation scripts, while its battery life and mobility are advantageous for professionals on the go. Security considerations play a significant role in the choice of operating system, with Windows being a common target for attackers, whereas macOS has stricter access controls. Windows laptops offer more price flexibility and upgradeability, while the MacBook Neo focuses on simplicity and build quality but lacks upgrade options. Ultimately, Windows is optimal for tasks involving malware analysis and virtual labs, while the MacBook Neo suits those focused on development and network analysis.

Winsage

June 18, 2026

How to check if your PC is Secure Boot ready

Microsoft has announced enhancements to its Secure Boot technology to improve system security by ensuring only trusted software is loaded during the boot process. ASUS will integrate advanced Secure Boot capabilities into its hardware, aligning with Microsoft's security protocols. This collaboration aims to enhance device integrity and protect user data against cyber threats. The updated Secure Boot technology will help prevent the execution of malicious software during startup, and both companies seek to boost consumer confidence in their products.