Robert McMillan at ComputerWorld reports:

CheckFree and some of the banks that use its electronic bill payment service are notifying more than 5 million customers after 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 Dec. 2 attack was widely publicized shortly after it occurred, but in a notice filed with the New Hampshire Attorney General, CheckFree disclosed that it was warning many more customers than previously thought.

That’s because CheckFree is not only notifying users of its own CheckFree.com Web site of the breach, it is also working with banks to contact people who tried to pay bills from banks that use the CheckFree bill payment service.

see CheckFree Warns 5 Million Customers After Hack