The bad news: A severe WPA2 protocol vulnerability dubbed KRACK holds the potential to break Wi-Fi security for virtually all wireless devices or networks, allowing attackers to snoop on your Internet traffic or even inject malicious code into websites you visit. The good news: If you’re running a Windows PC, you’re already safe—at least if you automatically apply new updates.

Microsoft quietly released a KRACK-smashing update as part of last week’s Patch Tuesday blitz, the company confirmed to Windows Central and other websites. Phew! Here is the company’s statement:

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KRACK Wi-Fi attacks shouldn’t harm updated Windows PCs