In what scenarios would a MacOS virus/malware/rootkit/etc (I use those terms to englobe all types of undesirable or malicious software or code) resist a format of the hard drive in MacOS recovery?
I know it’s possible, but I don’t know how likely it may be. Most online forums indicates that a format is enough (even overkill by some people’s opinions).
In my case, BitDefender popped up with a warning that it had blocked a Trojan when I opened a .txt file within Safari from a regular well known web site. I can’t find the file that triggered BitDefender anymore on the site therefor I can’t test the file itself.