Cyber Security

US blames North Korea for 'WannaCry' cyber attack

"The attack was widespread and cost billions, and North Korea is directly responsible," Tom Bossert, the White House homeland security adviser, wrote in an opinion piece published online by the Wall Street Journal.

U.S. officials warn of ISIS' new caliphate: cyberspace

The collapse of Islamic State's self-proclaimed caliphate has not diminished the militant group’s ability to inspire attacks on Western targets via the internet, U.S. national security officials told senators on Wednesday.