Norm Coleman’s Senate campaign apparently had a data breach, according to this report.

The revelation came after a group called Wikileaks e-mailed some Coleman supporters Tuesday night to suggest that their credit card information was floating around the Internet. Wikileaks casts itself as an outlet for “untraceable mass document leaking and analysis,” with a focus on exposing oppressive regimes worldwide and unethical behavior in corporations and government.

“Your name, address and other details appear on a membership list leaked to us from the Norm Coleman Senate campaign,” the group’s e-mail said.

A follow-up e-mail linked to a spreadsheet showing details of the breached data – names, addresses, phone numbers, donation amounts, partial card numbers and security codes. The sheet contains information for 4,715 donors.