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    Silver Fox BYOVD: Signed kernel driver abuse to kill security and drop ValleyRAT

    Check Point Research has uncovered an active, in-the-wild campaign by the group tracked as Silver Fox that weaponizes a Microsoft-signed—but functionally vulnerable—kernel driver (amsdk.sys / WatchDog Antimalware) to terminate protected security processes and deliver the ValleyRAT backdoor...
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    • amsdk.sys authenticode-timestamp byovd deviceiocontrol edr-killer ioctl kernel-driver loader pp-ppl protected-processes reflective-loading signed-driver silver-fox valleyrat vulnerable-driver-blocklist watchdog-antimalware wdac zam.exe
    • Replies: 0
    • Forum: Windows News
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    Xbox PC App Expands Local Gaming on ARM Windows 11 (Insiders)

    Microsoft is rolling out a targeted update that begins to change how the Xbox PC app behaves on Arm®-based Windows 11 devices, and for the first time Microsoft is letting Insiders download and run more PC titles locally on ARM hardware rather than relying solely on cloud streaming. This shift —...
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    • anti-cheat anti-cheat compatibility arm devices arm windows 11 arm-windows-11 arm64 arm64 gaming auto-sr battleye cloud gaming compatibility-list directx drm dx11 emulation emulation-performance game catalog game pass game-compatibility gaming on arm gaming-on-arm handheld gaming hybrid-cloud-local insider preview insider-program kernel-driver local install local installs local-gaming microsoft dev native arm native arm64 pc gaming pc gaming preview pc-gaming-preview prism emulator prism-emulation snapdragon storefront windows 11 windows gaming windows insider windows on arm windows-on-arm works-on-woa xbox xbox insider hub xbox pc app xbox-pc cohesion xbox-pc-app
    • Replies: 2
    • Forum: Windows News
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    CVE-2025-53137: Windows AFD.sys Use-After-Free Privilege Escalation

    A use‑after‑free vulnerability in the Windows Ancillary Function Driver for WinSock (AFD.sys), tracked as CVE-2025-53137, can be abused by an authorized local user to escalate privileges to SYSTEM on affected Windows hosts — a high‑impact kernel vulnerability that follows a string of similar AFD...
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    • afd.sys cve-2025-53137 eop hvci kernel-driver kernel-vulnerability local-exploitation memory-corruption patch-management patch-tuesday-2025 privilege escalation threat-hunting use-after-free wdac windows winsock
    • Replies: 0
    • Forum: Security Alerts
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