HP, Dell, ASUS, Lenovo, MSI and Acer have published Secure Boot certificate guides. Here's what each PC manufacturer says you ...

A crucial Windows security certificate just expired - how to check your PC ...

On June 24, 2026, Microsoft’s Digital Crimes Unit (DCU) facilitated the takedown, suspension, and blocking of domains that ...

Secure Boot certificate expiry 2026 arrives June 24 when Microsoft’s KEK CA 2011 expires. Devices missing the UEFI 2023 ...

Three zero-days patched: Three publicly disclosed zero-day vulnerabilities in core Windows components were addressed in the June 2026 Patch Tuesday release. Privilege escalation flaw: A flaw in the ...

You switched on your PC. But instead of your desktop, you see a blue screen asking for a BitLocker recovery key when you haven’t even locked your drive. You don’t know how that happened, and it feels ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. Microsoft publishes angry hacker YellowKey zero-day mitigation. As an angry hacker going by ...

Microsoft says it is considering a patch for a zero-day vulnerability, dubbed YellowKey, that allows attackers with access to a Windows device to bypass Bitlocker encryption protection and read and ...

Update 5/21: Since this article was released, recommend mitigations for YellowKey and other attacks have been released, as well as a full patch for BlueHammer. Nightmare-Eclipse, a cybersecurity ...

A zero-day exploit circulating online allows people with physical access to a Windows 11 system to bypass default BitLocker protections and gain complete access to an encrypted drive within seconds.