Just thought i'd share my experience of possibly having had my ATM card skimmed in Phuket on our recent trip. I do not use ATM's here with that card so can only assume it happened whilst in Phuket
I get a phone call yesterday from my bank (citibank) to see 1. where I currently am, 2. if I have my visa debit card in my possession and 3. if i was in Santa Cruz, Bolivia yesterday and made ATM cash withdrawls in excess of $1000 which of course i hadn't; i'm stuck in freezing cold Melbourne..
The banks advice upon return of any trip where i have used my Visa Debit card is to call them up and change the PIN number on that card, and if at all possible for longer trips; to call them weekly and change the PIN. I'll be doing this in the future not only with this card but all cards that i take and use that i use in ATM's or EFTPOS terminals