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Microsoft’s Secure Boot has been broken for a decade and no one noticed until now
(www.welivesecurity.com)
This is a most excellent place for technology news and articles.
Arch Wiki had pointed out for years that Secure Boot is a flawed mechanism.
It's not flawed at all. But its purpose isn't actually to secure anything. Its purpose is to complicate the installation of alternative OS and to perpetuate vendor lock in, while sounding like it's "for your security". In that regard, it has succeeded.
There is also TPM and Microsoft Pluton, which serve the same purpose.
A very large portion of Microsoft's efforts are dedicated to this. If they redirected just a bit of their work force to fixing their products, maybe people would actually want to use them, instead of being forced to.