FBI aware of several country-linked cyber threat groups

Washington - The FBI is aware of 60 different cyber threats groups linked to nation-states, a senior bureau official said on Tuesday.

Joseph Demarest, head of the FBI's cyber crime division, also said the bureau learned within a month of Sony Pictures first report of a large-scale cyber attack that North Korea was behind it.

On Tuesday, the FBI and State Department also announced a $3m reward for information leading to arrest or conviction of Eugenia Bogachev, who is charged in the US with running a computer attack network called GameOver Zeus that allegedly stole more than $100m from online bank accounts.

FBI officials said the $3m reward for Bogachev, who is believed to be in Russia, is the highest offered in a US cybercrime case.