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The day of the blue screens of death

Earlier today, an update from CrowdStrike caused global outages in Windows powered machines. Among impacted industries are: medicare, healthcare, home-land security, aviation, and transportation.

xz backdoor

A malicious backdoor was discovered in xz library that implements LZMA compression. xz, among many other places, is used, indirectly, in sshd. My attempt to explain what happened.