The CIA and the FBI are hunting for the insider that leaked classified materials on CIA hacking capabilities to WikiLeaks published in the Vault7 release.

The joint investigation is reportedly focusing on either a CIA employee or an independent contractor who had access to thousands of top-secret documents about the CIA’s methods of hacking into smartphones, smart televisions, and computers, according to CBS News.

[RELATED: Wikileaks Reveals CIA Can Spy On You Through Your TV And Bypass Your Mobile Encryption Apps]

The investigation involves the names of hundreds of individuals who may have had access to the materials.

The CBS report noted that the breach was potentially the worst security breach in CIA history.

Last week, CIA Director Mike Pompeo lambasted Wikileaks, calling the whistleblower organization a “non-state hostile intelligence service.”

“It’s time to call out Wikileaks for what it really is, a non-state hostile intelligence service often abetted by state actors like Russia,” Pompeo said.

[RELATED: CIA Director Pompeo Calls WikiLeaks a “Non-State Hostile Intelligence Service”]

During his anger filled rant, Pompeo noted how Wikileaks was encouraging its ‘followers’ to work for the CIA, in order to steal its secrets.

WikiLeaks has alleged that it obtained the CIA data from former contractors who worked for U.S. intelligence. The CIA has not commented on the authenticity of the WikiLeaks disclosures or on the status of the investigation.

The leak exposed thousands of vulnerabilities in software to hardware and IoT (Internet Of Things) devices.

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