The breach occured in October last year – but staff were not told until months later.
The investigation is reportedly 'rapidly unfolding' although no arrests have been made yet.
The cybercriminal reportedly owns luxury cars and a yacht and is currently believed to be living openly in Russia.
News comes in the wake of CIA accusations that Russia intervened in the US election.
Founder Julian Assange had claimed that WikiLeaks will share CIA's cyberweapons with tech giants.
The Blue Whale challenge reportedly encourages teens to complete a series of harmful tasks including cutting themselves.
The devices belonged to a 'large telecommunications company" and a "multinational technology company'.
A US judge has ruled that police can search an individual's files on peer-to-peer file sharing networks.
Tweets between suspected Russian spy and political consultant pointed to compromised email account of Hillary Clinton's campaign boss.
WikiLeaks published 'Vault 7' on 7 March containing 8,000-plus alleged CIA documents.
How to stay safe online: Two-factor authentication is one way to avoid hacking.
Hacker hijacked woman's Facebook, LinkedIn and iCloud accounts to blackmail her into engaging in sex acts.
WikiLeaks founder, Julian Assange, said he would provide access to CIA cyberweapons.
Documents relating to CIA's engineering department reportedly contain full names.
Last weekend, Trump deleted two tweets which misspelled the word "hereby".
Europol says technology is now at the root of all major crimes.
Multiple tech firms have scrambled to detect and patch security flaws following the massive leak.
It still remains unclear as to how many people were affected by the outage.
Defiant marines ignore investigating superiors and double down on online abuse of female colleagues.
IBTimes UK explains how to preserve your online privacy by anonymising your web traffic.
Germany's chief federal prosecutor probing possible 'criminal acts' after Vault 7 leak.
The CIA leaks detailed 'cyberweapons' and malware impacting iOS and Android.
Former CIA director: 'WikiLeaks is now an instrument of the Russian government.'
Only 4,400 dark web services reportedly remain active.
ESET researchers say seven versions of the ad-displaying trojan were spotted on Google Play.
The decoy apps were allegedly designed to be used in situations where CIA agents had to infect systems in the victims' presence.
Google says it has already fixed many security flaws in the Android and Chrome operating systems.
Comey said that 'absolute privacy' did not exist in the US, adding that encryption has limited the FBI's ability to access devices.
US law enforcement and intelligence officials were reportedly aware of a CIA security breach since 2016.
Intelligence officer says latest Wikileaks are 'more damaging' than 2013 Snowden revelations.