The group, run by Julian Assange, today realeased more than 8,000 confidential files it says show the techniques the CIA uses to snoop on us through hacking personal technology, such as Iphones and even the Samsung smart TV.
But, more sinisterly, Wikileaks says it obtained evidence that showed a system was worked on to "infect" the central control system of modern vehicles, that the anti-secrecy organisation claims would allow it to carry out "largely undetectable assasinations".
In a statement accompanying the release of the first documents, Wikileaks said: "As of October 2014 the CIA was also looking at infecting the vehicle control systems used by modern cars and trucks.
"The purpose of such control is not specified, but it would permit the CIA to engage in nearly undetectable assassinations."
However, the statement appears to be Wikileaks analysis of the potential use of such an "infection" rather there being any documentary evidence to support the theory.
Wikileaks has hinted at more disclosures in the next hour.
WikiLeaks today described its latest leaks as "the largest ever publication of confidential documents on the agency".
The first full part of the series, "Year Zero", comprises 8,761 documents and files from an isolated, high-security network situated inside the CIA's Center for Cyber Intelligence in Langley, Virgina, according to Wikileaks.
But Wikileaks says it has proof of the CIA using consumer technology such as smart phones, PCs, and even TVs to hack into personal accounts or even spy on people.
The Wikileaks statement added: "'Year Zero' introduces the scope and direction of the CIA's global covert hacking program, its malware arsenal and dozens of "zero day" weaponised exploits against a wide range of US and European company products, including Apple's iPhone, Google's Android and Microsoft's Windows and even Samsung TVs, which are turned into covert microphones."
Wikileaks says it has been provided with portions of a CIA archive of its hacking arsenal after it "lost control of most of it".
It includes malware, viruses, trojans, weaponised "zero day" exploits, malware remote control systems and associated documentation, it said.
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Wikileaks added: "This extraordinary collection, which amounts to more than several hundred million lines of code, gives its possessor the entire hacking capacity of the CIA."
Wikileaks said by the end of 2016, the CIA's hacking division, which formally fell under the agency's Center for Cyber Intelligence (CCI), had over 5000 registered users and had produced more than a thousand hacking systems, trojans, viruses, and other "weaponised" malware.
WikiLeaks said a statement from its source asked "policy questions that urgently need to be debated in public, including whether the CIA's hacking capabilities exceed its mandated powers and the problem of public oversight of the agency".
Julian Assange, WikiLeaks editor, said: "There is an extreme proliferation risk in the development of cyber 'weapons'.
"Comparisons can be drawn between the uncontrolled proliferation of such 'weapons', which results from the inability to contain them combined with their high market value, and the global arms trade.
"But the significance of 'Year Zero' goes well beyond the choice between cyberwar and cyberpeace."
The purpose of such control is not specified, but it would permit the CIA to engage in nearly undetectable assassinations.
The CIA has yet to publicly respond.
A CIA spokeswoman told Express.co.uk: "We do not comment on the authenticity or content of purported intelligence documents.”
Wikileaks last significant release of data was in the run up to the US Presidential election when thousands of emails from the gmail account of Hillary Clinton's account manager John Podesta created headlines across the globe.
The US government said they had been leaked to Wikileaks by Russian hackers working for its government – something Assange denies.
He remains under political asylum in the Ecuadorian Embassy in London, to avoid prosecution over a rape allegation in Sweden which he dines, and potential extradition to the US over Wikileaks activities.
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