LexisNexis warns of breach after alleged mafia bust

Lee Klein, 39, of Boynton Beach, Florida, was by the U.S. Department of Justice in May following an undercover sting operation that netted 11 suspects from an alleged South Florida crew of the Bonanno crime family.

On Friday, the office of the New Hampshire Attorney General posted a that LexisNexis sent out to consumers last month, warning that Klein may have used his access to LexisNexis' Seisint databases "in order to perpetrate certain crimes."

LexisNexis has had problems with credit card fraudsters using its database in the past, but Klein's alleged crimes are different.

In court filings, the DOJ says Klein would provide Bonanno family members with names, addresses and account numbers as part of a fake check-cashing operation. But he's also accused of using computer databases to get information on potential extortion or assault targets as well as "individuals suspected by the Enterprise members of being involved with law enforcement."

In a statement, LexisNexis said Monday that "the former Seisint customer involved in this matter should have provided notice to potentially affected individuals. However, because the customer is no longer in business we provided the notice." The company said it sent out 13,329 notification letters.