Three times in the last year, my roommate and I have both found our ATM/debit cards locked out, and a few days later we get new ones in the mail, along with a letter basically saying that the cards were compromised, some hacker stole them from a merchant we shop at, and advising us to be careful about where we spend, and in particular most internet stores have very poor security.
My roommate and I do a shared budget and the way we shuffle things is kinda specific. First day of the month the full amount of the rent comes out of his bank account. All of the bills are paid in full out of mine as they come over the month, along with all the food.
The only two places my roommate's card had ever been used in two out of the three cases where the bank found his card was among a list of stolen numbers were...
The bank, and the largest chain of gas stations in the state.