Microsoft security update that blocks Black Lotus (and, incidentally, also blocks a *lot* of existing Windows boot media and recovery images - you do want to be careful in applying this, but I'm still kind of amazed this ended up being politically viable!) https://support.microsoft.com/en-us/topic/kb5025885-how-to-manage-the-windows-boot-manager-revocations-for-secure-boot-changes-associated-with-cve-2023-24932-41a975df-beb2-40c1-99a3-b3ff139f832d