Speaking as someone who's often had to boot up RescueCD to rescue a PC from malware or so, and having just read recently about ransomeware, it strikes me that Microsoft's UEFI shenanigans are a boon for ransomeware. If there is no way to get around such a fixed sequence of boot events except by expensive radical open-heart computer surgery, instead of the quick-and-easy reboot with a secure OS from CD or USB stick and running anti-malware software from it, a time-tried-and-proved method, then we have yet another few years of malware supremacy to look forward to: MSWin9x revivus.
Boon for ransomware, by the looks of it
Wesley Parish