From kali.org
A New Kali Linux Archive Signing Key | Kali Linux Blog
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TL;DR Bad news for Kali Linux users! In the coming day(s), apt update is going to fail for pretty much everyone out there: Missing key 827C8569F2518CC677FECA1AED65462EC8D5E4C5, which is needed to verify signature. Reason is, we had to roll a new signing key for the Kali repository. You need to...
on Wed, 1AM