A hacker calling himself Kirllos is selling user credentials for 1.5 million Facebook accounts, according to researchers at VeriSign's iDefense Labs.

"IDefense doesn't know if Kirllos' accounts are legitimate, and Facebook didn't respond to messages Thursday seeking comment," writes Computerworld's Robert McMillan. "If they are legitimate, he has the account information of about one in every 300 Facebook users. His asking price varies from $25 to $45 per 1,000 accounts, depending on the number of contacts each user has."

"To date, Kirllos seems to have sold close to 700,000 accounts, according to VeriSign Director of Cyber Intelligence Rick Howard," McMillan writes.

Click here to read the Computerworld article.