Vulnerable to Spectre: If this says 'YES!', you'll need to install the UEFI firmware or BIOS update from your PC's manufacturer to protect your computer from certain Spectre attacks.Vulnerable to Meltdown: If this says 'YES!', you'll need to install the patch from Windows Update to protect your computer from Meltdown and Spectre attacks.Once you've run this tool, you'll see a few important details: PC manufacturers should begin rolling out new UEFI firmware updates soon. As of February 20, Intel has released stable microcode updates for Skylake, Kaby Lake, and Coffee Lake-that's the 6th, 7th, and 8th Generation Intel Core platforms. Intel said you should wait for a final UEFI firmware patch. Update: On January 22, Intel announced that users should stop deploying the initial UEFI firmware updates due to 'higher than expected reboots and other unpredictable system behavior'. Unfortunately, they aren't distributed via Windows Update-unless you're using a Microsoft Surface device-so they must be downloaded from your manufacturer's website and installed manually. These UEFI updates contain new Intel or AMD processor microcode that adds additional protection against these attacks. To fully protect against Meltdown and Spectre, you'll need to install a UEFI or BIOS update from your PC's manufacturer as well as the various software patches. Related: How Will the Meltdown and Spectre Flaws Affect My PC?

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