Federal prosecutors said on Thursday they have charged five men responsible for a hacking and credit card fraud spree that cost companies more $300 million and two of the suspects are in custody, in the biggest cyber crime case filed in U.S. history.

They also disclosed a new security breach against Nasdaq, though they provided few details about the attack.

Other companies targeted by the hackers include a Visa Inc licensee, J.C. Penney Co, JetBlue Airways Corp and French retailer Carrefour SA, according to an indictment unveiled in New Jersey.

Authorities have been pursuing the hackers for years. Many of the breaches were previously reported, though it appeared the one involving Nasdaq OMX Group Inc was being disclosed for the first time.

Prosecutors said they conservatively estimate that the group of five men from Russia and Ukraine helped steal at least 160 million payment card numbers, resulting in losses in excess of $300 million.

Source Reuters