Microsoft Secure Boot has been broken for most of its existence
Old and forgotten "shims" Microsoft failed to revoke have made Secure Boot bypasses simple.
https://arstechnica.com/security/2026/07/microsoft-secure-boot-has-been-broken-for-most-of-its-existence/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social