PKfail Secure Boot bypass lets attackers install UEFI malware BleepingComputerSecure Boot is completely broken on 200+ models from 5 big device makers Ars TechnicaHard to believe but Secure Boot BIOS security has been compromised on hundreds of PC models from big brands because firmware engineers used four-letter passwords PC GamerMillions of Devices Vulnerable to 'PKFail' Secure Boot Bypass Issue Dark ReadingSecure Boot is busted on hundreds of PCs from Dell, Acer, Intel, and others PCWorld