I had an interesting experience with my Revolut card. I only top it up when traveling, and the rest of the time it sits nearly empty, with like $3-4. At some point I started getting occasional notifications about transactions declining. Stuff like video game points and random little online shops. Clearly my card's been skimmed or otherwise leaked somehow. Bummer.

Since Im months away from my next trip I didnt immediately cancel the card and just left it on out of curiosity. I started blocking every attempted merchant. At some point, I started getting Netflix subscription attempts, and when I tried to block it, it said "We can't block payments to Netflix. If you have a subscription with them, you can cancel it directly." Makes me wonder what kind of rube goldberg machine their backend runs on.