CheckFree - 2009
CheckFree Corp. and some of the banks that use its electronic bill payment service say that criminals took control of several of the company's Internet domains and redirected customer traffic to a malicious Web site hosted in the Ukraine. The company believes that about 160,000 consumers were exposed to the Ukrainian attack site. However, because the company lost control of its Web domains, it doesn't know exactly who was hit. It has warned a much larger number of customers. This breach was reported back in Dec. 3, 2008.