Anecdote. A few months ago, I have been using my credit card for about a year with no issues, no fraud purchases. Then I decided to support someone at Patreon

Anecdote. A few months ago, I have been using my credit card for about a year with no issues, no fraud purchases. Then I decided to support someone at Patreon and to do that I had to enter my credit card details. A few days later there were fraudulent purchases on Alibaba charged to my card. I immediately called the bank, had my credit card frozen, reversed the transactions, and requested a new card. Although I can't be sure, I have a strong suspicion that it was Patreon that leaked my credit card info, as it was the only unusual payment I made, the usual being electric/internet bills, food delivery, etc. Have had no problems with my credit card since.