I have a lot of Apple II ROM images, mostly from cards. Some I copied off cards and some I downloaded. I’ve been using apps like Mac TextEdit to look at them. Yesterday I wanted to compare a couple and found that some wouldn’t open with TextEdit.
Then I looked closer at the window that popped up and saw the message that it couldn’t verify that it’s free of malware. Had to go to system settings, Security, click Open Anyways and enter my password. Annoying.