To help detect against fraud, card companies have created various operations to help fraud detection. Operation stopIT, the Excessive charge back program and, a Global merchant audit program. However, there is only so much the technology of these card companies can do. At home card owners should check there credit card transactions weekly to detect fraud. Also, be alert for suspicious phone calls that involve a claimed purchase, and if you receive any mail about a service or purchase that you are slightly unaware of, research it!