First . . . the iTunes charge is used to see if the credit card is working. Usually they charge no more than a dollar. Once they find the card valid, they make all the big purchases. A good bank will catch this and deny the charges to the card. The iTunes buy for a dollar is the tip off and they watch to see what the next purchases are and compare the location of the charges to the location where most your charges come from online. Be glad your bank caught this. I am glad mine did and notified me.