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Your PC's Security Is Expiring: Act Now!
3 Jul
Summary
- Secure Boot certificates from 2011 are expiring in 2026.
- Expired certificates weaken protection against bootkit malware.
- Check Windows Security app's Device Security for warnings.
Secure Boot, a vital Windows security feature designed to block malicious software before the operating system starts, faces a critical update. Certificates initially issued in 2011 were slated to expire in 2026, but three of the four have already reached end-of-life as of late June 2026, with the fourth set to expire in October 2026. This expiration significantly weakens PC security, leaving systems vulnerable to bootkits and malware that target the startup process.
Users are advised to manually check their PC's security status. The Windows Security app, under the Device Security section, will display a green checkmark for updated 2023 certificates. However, a yellow or red warning indicates that the system is protected by expired certificates and requires action. This action might involve a UEFI/BIOS update provided by the computer manufacturer.
For users whose PCs no longer receive manufacturer support or cannot be updated, the situation is more dire. They may face the choice of purchasing a new PC or switching to a Linux distribution that can bridge the security gap. Ignoring these warnings is akin to driving with a 'Check Engine' light on, potentially leading to significant security issues and difficult remediation processes.
