I had 3 credit cards stolen in about a 2 week period a few months back (not sure if I mentioned it here already). With the pandemic I've barely been out anywhere. My best guess was some online site that I happened to have used each card happened to get hacked, but it still scared me. Was someone hacking my local PC? The weird thing was one card was an old one that I barely used.
Best I could tell, there were 2 different vendors where I used all 3 cards, so one of them must have gotten hacked. I'm still not sure. I never save cards in the browser, but who knows? Maybe I had some nasty malware that never got picked up?
The good thing was that the CC companies are pretty good about this stuff now. It was a major pain. The two big things I do now is try and keep 1 card per site and separate them as much as possible. I also set up a bunch of text alerts for the cards, but that gets to be a pain because some amazon transaction will go through later and I'll forget what it is.