From Bank Info Security
During the last week of October, credit and debit cardholders in the Capitol Hill neighborhood of Seattle began discovering fraudulent charges made against their cards.
Security experts speculate that this spree might have resulted from a point of sale attack orchestrated by organized crime.
One of the credit unions affected was BECU, and their fraud monitoring service was able to spot the fraud and block most of the charges. It appears the credit union members affected didn't have to go through any hassles besides having to live without their card for a while.
The main worry for debit card users is that money will be removed from their accounts, and it will be a long and painful process to get the bank to reimburse you for the fraudulent charges. It's typically much easier to deal with this type of fraud for credit cards. You don't have to wait for the bank to reimburse you the money that was fraudulently debited.