My card is ok but I knew that it was insecure going in as this problem with the club's security isn't exactly new.

Like heroic_decepticon, I wouldn't have joined the club at all if it wasn't for this year's exclusives - It was always somewhat lackluster and unfriendly to non-US members. I knew there was potential risk of having my card details stolen but since I hardly ever use credit (only for online purchases) and the card itself has a very low max amount, there was minimal risk.