In light of the new breach of as many as 1.5 million credit card numbers from Global Payments (which processes MasterCard and Discover), keep in mind that the tactics of the criminal syndicates behind these hacks has changed.
Rather than put big charges on your card—which will trigger automatic scrutiny—they are now nicking millions of accounts for small charges. They don’t slaughter the cow. They bleed it a little each day knowing that most people will write off small charges, writing them off to forgetful memories.
The takeaway: Scrutinize your credit card statement, and report anything that seems off—even if it is a small charge.