cryptographic Archives

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 16, 2026

Windows Netlogon Flaw CVE-2026-41089: CVSS 9.8 [2026]

CVE-2026-41089 is a critical vulnerability in the Windows Netlogon service, rated 9.8 on the CVSS scale, allowing unauthenticated attackers to execute arbitrary code with SYSTEM-level privileges on domain controllers. It affects all supported versions of Windows Server configured as domain controllers, from Windows Server 2012 R2 to the latest release. Microsoft addressed this vulnerability on May 12, 2026, during a broader update that included 138 fixes, but it went largely unnoticed until early June when active exploitation was confirmed. The vulnerability is characterized as a stack-based buffer overflow and is considered "wormable" due to its ability to self-propagate across systems without user intervention. Organizations are advised to patch all domain controllers and audit network access to mitigate exposure.

AppWizard

June 25, 2026

You can finally turn Riot’s Vanguard anti-cheat off when you’re not playing a game

Riot Games is updating its Vanguard anti-cheat system to an "on-demand" model, which will only activate during gameplay and stop once the game ends. This change addresses concerns over Vanguard's previous persistent background operation and kernel mode access. Players must meet specific security criteria to use the new feature, including enabling pre-boot security mechanisms and Windows' native protection features. Approximately 35% of players already meet these conditions, while 3% using older hardware will not have access to the on-demand option until they upgrade. Vanguard will continue its current operation for those unable to meet the requirements. The update is influenced by advancements in Windows and PC hardware security and aims to enhance anti-cheat measures while keeping the process optional for most players.

Winsage

June 25, 2026

Windows 11 Secure Boot update released to all, hours ahead of expiry

Microsoft has begun rolling out the Secure Boot 2023 certificate update to eligible Windows 11 and Windows 10 PCs ahead of the expiration of the Microsoft Corporation KEK CA 2011 on June 24, 2026. This update enhances device targeting data for automatic Secure Boot certificate updates. Secure Boot is a firmware-level security feature that verifies digital signatures of boot components to prevent rootkits and bootkits. The certificates for Secure Boot were first issued in 2011, with subsequent expirations for related certificates occurring in June and October 2026. Users can check their Secure Boot certificate status through the Windows Security app or System Information. If a PC does not receive the update, it will still boot normally but will lose the ability to receive future boot-level security updates. Multiple restarts after updates are expected due to the Secure Boot certificate process. A new folder, C:WindowsSecureBoot, is not malware but is used for staging cryptographic certificate files. Windows 10 users enrolled in the Extended Security Updates program will also receive the Secure Boot update, while those not enrolled will not. The expiration of the KEK CA 2011 means Microsoft will not be able to sign new Secure Boot revocation payloads using the old key, but existing signed payloads will remain functional.

Winsage

June 24, 2026

Windows 11 Secure Boot update released to all, hours ahead of expiry

Microsoft has begun rolling out the Secure Boot 2023 certificate update for eligible Windows 11 and Windows 10 PCs ahead of the expiration of the original certificates on June 24, 2026. The update includes additional device targeting data to increase coverage for automatic updates. Devices receive the new certificates after demonstrating successful update signals. The original Secure Boot certificates were issued in 2011, with expiration dates set for June 24, 2026, June 27, 2026, and October 19, 2026. Microsoft has been distributing replacement 2023 certificates since 2024, with the June 2026 update expanding eligible devices significantly. Users can check their Secure Boot status through the Windows Security app or System Information. If a PC did not receive the update, it will still function normally but may not receive future boot-level security updates. Multiple restarts after updates are expected behavior, and the SecureBoot folder in Windows is not malware. Windows 10 users in the Extended Security Updates program are also receiving the Secure Boot update. The expiration of the Microsoft Corporation KEK CA 2011 on June 24 means no new Secure Boot revocation payloads can be signed with the old key, but existing signed payloads will continue to function.

Winsage

June 17, 2026

Windows and Linux users: The deadline to update Secure Boot keys is near

In 2012, a novel bootkit targeting Mac OS X systems emerged, infiltrating the EFI firmware. A basic bootkit for Windows 8 also appeared, compromising the UEFI bootkit. By 2013, a more sophisticated UEFI bootkit named Dreamboat was introduced for Windows. The first documented real-world UEFI attack occurred in 2018 with the malware LoJax, linked to a Kremlin-backed hacking group. In 2020, the second known UEFI malware, MosaicRegressor, was discovered, which verified the presence of a malicious file upon each reboot. New UEFI bootkits like ESpecter, FinSpy, and MoonBounce have since emerged. In response to the threat of UEFI bootkits, Microsoft collaborated with manufacturers to implement Secure Boot, a protocol that uses cryptographic signatures to ensure the integrity of firmware during startup.

Winsage

June 15, 2026

Microsoft released the Windows 11 Secure Boot update for all PCs, how to verify yours

Microsoft has expanded the rollout of the Secure Boot 2023 certificate update to more Windows 11 and Windows 10 devices with the June 2026 Patch Tuesday update (KB5094126). This update aims to ensure that most supported consumer PCs are classified as high confidence, meaning necessary certificates are either installed or will be applied automatically. Secure Boot is a firmware security feature that verifies the software attempting to load during the startup process, blocking unauthorized software. The certificates supporting Secure Boot, issued in 2011, are expiring in stages starting June 24, 2026, prompting Microsoft to deploy replacement certificates. Most home users do not need to take manual action as the updates will occur automatically via Windows Update. Users can check their Secure Boot certificate status in the Windows Security app. A yellow warning indicates pending compatibility data, while a red alert suggests a firmware incompatibility requiring a BIOS update. Multiple reboots during the update process are normal, and a new SecureBoot folder in Windows is for staging cryptographic files. Older PCs may experience longer update times, and some may not receive updates due to firmware issues. HP users should check for BIOS updates if encountering BitLocker recovery loops. IT administrators should monitor device classifications and manually initiate updates for devices not in the high confidence category. Devices with Secure Boot disabled cannot receive updates, leaving them vulnerable. The expiration of the Microsoft Corporation KEK CA 2011 certificate on June 24 does not immediately affect device functionality, but it limits Microsoft's ability to sign new bootkit blacklist updates.

Winsage

June 10, 2026

Proton releases Proton Drive CLI for Windows, Mac, and Linux

Proton has released a new command-line interface (CLI) for Proton Drive, allowing users to manage encrypted files from a terminal on Windows, macOS, and Linux. The CLI includes features such as authentication via browser, uploading files while skipping existing ones, checking sharing status, and inviting collaborators to shared folders. Future updates will add capabilities for managing photos, sharing files through public links, creating custom albums, and switching between accounts. Installation on macOS and Linux involves downloading a pre-built binary or building from source. The release follows a significant performance upgrade of Proton Drive, which is now three times faster due to a unified Drive SDK that enhances cryptographic task execution and reduces battery drain on mobile devices.

Winsage

June 4, 2026

ADCS Now Generates Post-Quantum Certificates For Windows

Active Directory Certificate Services (ADCS) now supports the generation of post-quantum certificates, enhancing quantum-safe cryptography within Windows' secure connection protocols. Microsoft has integrated PQ TLS hybrid key exchange into the Windows Transport Layer Security (TLS) stack, providing protection against "Harvest Now, Decrypt Later" attacks. The PQ TLS hybrid key exchange combines traditional cryptographic methods with the NIST ML-KEM algorithm, offering three hybrid combinations: X25519MLKEM768, SecP256r1MLKEM768, and SecP384r1_MLKEM1024. This feature is available in preview via the Windows Insider Program and will be rolled out to Windows 11 and Windows Server. Additionally, Windows cryptography APIs now support composite ML-KEM and ML-DSA algorithms, which are NIST-approved standards for key exchange and digital signatures, enhancing security by requiring multiple components to be compromised. Microsoft emphasizes the importance of establishing new Certification Authorities (CAs) for implementing post-quantum certificate issuance, as existing CAs cannot be upgraded. The introduction of ML-DSA support within ADCS allows organizations to counter HNDL risks associated with long-lived data. Organizations are encouraged to inventory their use of public-key cryptography, prioritize systems protecting sensitive data, and test hybrid and composite approaches in non-production environments to facilitate a smooth transition to quantum-safe cryptography.