Let me remind you that we also said that Zloader Trojan Disables Microsoft Defender on Victims’ Systems.

The researchers remind that Secure Boot is part of the UEFI specification and is designed to protect the OS boot process so that only trusted code signed with a special certificate is executed within it.

Experts write that three Microsoft-approved UEFI bootloaders at once had vulnerabilities that allowed them to bypass Secure Boot and execute unsigned [...]