re: Strategies to prevent credit/debit cards from online fraud

My card has been compromised three times: once after I used it to buy something in Charles deGaulle Airport outside Paris during a stopover going to Kiev, Ukraine, once after I paid for my hotel in Yerevan, Armenia and once following the well-publicized incident where Home Depot's CC system was hacked exposing customers who had recently used their CC to pay for something in one of their stores.

I never lost a penny from any of the above.