Reformatting won’t remove invisible and persistent malware infecting hard drive firmware

Equation Group has developed and deployed invisible and persistent Trojans to infect possibly tens of thousands of victims since at least 2001. EquationDrug and GrayFish have the ability to reprogram hard drives. Kaspersky Lab researchers call the Equation group unique in almost every aspect of their activities. The groups persistence mechanism is perhaps the most sophisticated weve ever seen: re-flashing the hard drive firmware.”]

Source: https://www.csoonline.com/article/2884945/reformatting-wont-remove-invisible-and-persistent-malware-infecting-hard-drive-firmware.html