Originally Posted by
RussianTexan
I was reading some of the threads on financial matters related to travel and I read about banks freezing peoples' cards when it seems that they're being used abroad, possibly illegally?
It is not illegal (at least for US-issued cards and many other countries as well). It is a fraud prevention action.
Originally Posted by
kaylla334
Definitely warn your bank as well as Visa/Mastercard/Amex/discover etc...
MasterCard and Visa (and Amex for cards issued by other banks) have nothing to do with the freezing/blocking. This is based on the issuers' algorithms. Simply call your issuer (for credit card) or bank (for ATM/debit) and let them know your travel plans - dates and locations. They should note your account and you will be fine.