By Dustin Volz WASHINGTON (Reuters) - Six Democratic U.S. senators on Tuesday demanded Yahoo Inc explain why hackers' theft of user information for 500 million accounts two years ago only came to light last week and lambasted the company's handling of the breach as "unacceptable." The lawmakers said they were "disturbed" the 2014 intrusion, disclosed by the company on Thursday, was detected so long after the hack occurred. "That means millions of Americans’ data may have been compromised for two years," the senators wrote in a joint letter addressed to Yahoo Chief Executive Officer Marissa Mayer. "This is unacceptable." Yahoo did not immediately respond to a request for comment about the letter, which was signed by Senators Patrick Leahy, Al Franken, Elizabeth Warren, Richard Blumenthal, Ron Wyden and Edward Markey.
The suspect in the bombing this month in New York's Chelsea neighborhood appears to have acted on his own, with no connection to an extremist movement, the FBI said Tuesday. "We see so far no indication of a larger cell or the threat of related attacks," FBI director James Comey testified at a Senate committee hearing. The suspect in the September 17 bombing that left 31 people wounded, Ahmad Khan Rahami, was arrested two days after the attack.