'RED LINE!!' White House mulls 'proportional response' after FBI traces origin of Sony hack

Doug P. | 1:24 PM on December 19, 2014

The FBI has concluded that North Korea played at least a major role in the Sony hack:

FBI says "tools" used by North Korea in Sony cyber attack are similar to a 2013 intrusion on South Korean banks and media by the North.

— PETER MAER (@petermaer) December 19, 2014

FBI says forensic evidence indicates #NorthKorea was responsible for #Sony hack, but does not preclude involvement from other parties.

— Chad Pergram (@ChadPergram) December 19, 2014

FBI STATEMENT: "…the FBI now has enough information to conclude that the North Korean government is responsible" for the hacking of SONY.

— Mark Knoller (@markknoller) December 19, 2014

FBI says North Korea’s actions intended to inflict significant harm on a US business and suppress right of Americans to express themselves.

— Mark Knoller (@markknoller) December 19, 2014

FBI statement on the it's investigation and conclusion on the hacking of SONY posted at http://t.co/f5Q6EuXFd1

— Mark Knoller (@markknoller) December 19, 2014

Will there be a response from the U.S. government?

Now up to Pres Obama to decide how the US will respond to the North Korean cyber attack. WH says it's weighing a "proportional response."

— Mark Knoller (@markknoller) December 19, 2014

The definition of “proportional” remains to be seen.

@markknoller @MelissaTweets Because nothing communicates resolve and commitment more than the phrase "proportional response".

— Darth Heinous (@jcopella) December 19, 2014