US intelligence and law enforcement officials say they've been aware since the end of last year of a security breach at the CIA and are focusing on contractors as the likeliest source of documents being passed on to WikiLeaks detailing the agency's hacking tools.
The officials told Reuters that they believed documents published by WikiLeaks yesterday about CIA techniques used between 2013 and 2016 are authentic.
The documents show that CIA hackers could get into Apple iPhones, Google Android devices and other gadgets in order to capture text and voice messages before they were encrypted.
The White House says that President Donald Trump is "extremely concerned" about the CIA security breach that led to the Wikileaks release, and the Administration will be tough on leakers.
"Anybody who leaks classified information will be held to the highest degree of law," spokesman Sean Spicer told reporters.