WikiLeaks has released a huge set of files that it calls "Year Zero" and which mark the biggest exposure of CIA spying secrets ever.

The massive set of documents – over 8,000 pages in all – include a host of hacking secrets that could embarrass intelligence agencies and the US government, as well as undermining spying efforts across the world.

Here are six of the biggest secrets and pieces of information yet to emerge from the huge dump.

Gadget and tech news: In pictures Show all 25 1 /25 Gadget and tech news: In pictures Gadget and tech news: In pictures Gun-toting humanoid robot sent into space Russia has launched a humanoid robot into space on a rocket bound for the International Space Station (ISS). The robot Fedor will spend 10 days aboard the ISS practising skills such as using tools to fix issues onboard. Russia's deputy prime minister Dmitry Rogozin has previously shared videos of Fedor handling and shooting guns at a firing range with deadly accuracy. Dmitry Rogozin/Twitter Gadget and tech news: In pictures Google turns 21 Google celebrates its 21st birthday on September 27. The The search engine was founded in September 1998 by two PhD students, Larry Page and Sergey Brin, in their dormitories at California’s Stanford University. Page and Brin chose the name google as it recalled the mathematic term 'googol', meaning 10 raised to the power of 100 Google Gadget and tech news: In pictures Hexa drone lifts off Chief engineer of LIFT aircraft Balazs Kerulo demonstrates the company's "Hexa" personal drone craft in Lago Vista, Texas on June 3 2019 Reuters Gadget and tech news: In pictures Project Scarlett to succeed Xbox One Microsoft announced Project Scarlett, the successor to the Xbox One, at E3 2019. The company said that the new console will be 4 times as powerful as the Xbox One and is slated for a release date of Christmas 2020 Getty Gadget and tech news: In pictures First new iPod in four years Apple has announced the new iPod Touch, the first new iPod in four years. The device will have the option of adding more storage, up to 256GB Apple Gadget and tech news: In pictures Folding phone may flop Samsung will cancel orders of its Galaxy Fold phone at the end of May if the phone is not then ready for sale. The $2000 folding phone has been found to break easily with review copies being recalled after backlash PA Gadget and tech news: In pictures Charging mat non-starter Apple has cancelled its AirPower wireless charging mat, which was slated as a way to charge numerous apple products at once AFP/Getty Gadget and tech news: In pictures "Super league" India shoots down satellite India has claimed status as part of a "super league" of nations after shooting down a live satellite in a test of new missile technology EPA Gadget and tech news: In pictures 5G incoming 5G wireless internet is expected to launch in 2019, with the potential to reach speeds of 50mb/s Getty Gadget and tech news: In pictures Uber halts driverless testing after death Uber has halted testing of driverless vehicles after a woman was killed by one of their cars in Tempe, Arizona. March 19 2018 Getty Gadget and tech news: In pictures A humanoid robot gestures during a demo at a stall in the Indian Machine Tools Expo, IMTEX/Tooltech 2017 held in Bangalore Getty Gadget and tech news: In pictures A humanoid robot gestures during a demo at a stall in the Indian Machine Tools Expo, IMTEX/Tooltech 2017 held in Bangalore Getty Gadget and tech news: In pictures Engineers test a four-metre-tall humanoid manned robot dubbed Method-2 in a lab of the Hankook Mirae Technology in Gunpo, south of Seoul, South Korea Jung Yeon-Je/AFP/Getty Gadget and tech news: In pictures Engineers test a four-metre-tall humanoid manned robot dubbed Method-2 in a lab of the Hankook Mirae Technology in Gunpo, south of Seoul, South Korea Jung Yeon-Je/AFP/Getty Gadget and tech news: In pictures The giant human-like robot bears a striking resemblance to the military robots starring in the movie 'Avatar' and is claimed as a world first by its creators from a South Korean robotic company Jung Yeon-Je/AFP/Getty Gadget and tech news: In pictures Engineers test a four-metre-tall humanoid manned robot dubbed Method-2 in a lab of the Hankook Mirae Technology in Gunpo, south of Seoul, South Korea Jung Yeon-Je/AFP/Getty Gadget and tech news: In pictures Waseda University's saxophonist robot WAS-5, developed by professor Atsuo Takanishi Rex Gadget and tech news: In pictures Waseda University's saxophonist robot WAS-5, developed by professor Atsuo Takanishi and Kaptain Rock playing one string light saber guitar perform jam session Rex Gadget and tech news: In pictures A test line of a new energy suspension railway resembling the giant panda is seen in Chengdu, Sichuan Province, China Reuters Gadget and tech news: In pictures A test line of a new energy suspension railway, resembling a giant panda, is seen in Chengdu, Sichuan Province, China Reuters Gadget and tech news: In pictures A concept car by Trumpchi from GAC Group is shown at the International Automobile Exhibition in Guangzhou, China Rex Gadget and tech news: In pictures A Mirai fuel cell vehicle by Toyota is displayed at the International Automobile Exhibition in Guangzhou, China Reuters Gadget and tech news: In pictures A visitor tries a Nissan VR experience at the International Automobile Exhibition in Guangzhou, China Reuters Gadget and tech news: In pictures A man looks at an exhibit entitled 'Mimus' a giant industrial robot which has been reprogrammed to interact with humans during a photocall at the new Design Museum in South Kensington, London Getty Gadget and tech news: In pictures A new Israeli Da-Vinci unmanned aerial vehicle manufactured by Elbit Systems is displayed during the 4th International conference on Home Land Security and Cyber in the Israeli coastal city of Tel Aviv Getty

1) The CIA has the ability to break into Android and iPhone handsets, and all kinds of computers

The US intelligence agency has been involved in a concerted effort to write various kinds of malware to spy on just about every piece of electronic equipment that people use. That includes iPhones, Androids and computers running Windows, macOS and Linux.

If that software is as powerful as WikiLeaks claims, it could be used to remotely control those devices and switch them on and off. Once that happened, a vast array of data would be made available – including users' locations, messages they had sent, and potentially everything heard by the microphone or seen by the camera.

2) Doing so would make apps like Signal, Telegram and WhatsApp entirely insecure

Encrypted messaging apps are only as secure as the device they are used on – if an operating system is compromised, then the messages can be read before they encrypted and sent to the other user. WikiLeaks claims that has happened, potentially meaning that messages have been compromised even if all of the usual precautions had been taken.

What is Spyware?

3) The CIA could use smart TVs to listen in on conversations that happened around them

One of the most eye-catching programmes detailed in the documents is "Weeping Angel". That allows intelligence agencies to install special software that allows TVs to be turned into listening devices – so that even when they appear to be switched off, they're actually on.

That's just one of the technologies created by the Embedded Devices Branch, the CIA division at the centre of much of the leaks of new information.

4) The agency explored hacking into cars and crashing them, allowing 'nearly undetectable assassinations'

Many of the documents reference tools that appear to have dangerous and unknown uses. One file, for instance, shows that the CIA were looking into ways of remotely controlling cars and vans by hacking into them.

"The purpose of such control is not specified, but it would permit the CIA to engage in nearly undetectable assassinations," WikiLeaks notes, in an unproven piece of speculation.

5) The CIA hid vulnerabilities that could be used by hackers from other countries or governments

WikiLeaks claims that its source handed over the documents in order to provoke a debate about the power of intelligence agencies and how their information should be exposed. Perhaps central to that is the accusation that the CIA was "hoarding" exploits that it had found – rather than handing them over to the companies that could fix them, and so make users safe, as they had promised to do.

Such bugs were found in the biggest consumer electronics in the world, including phones and computers made Apple, Google and Microsoft. But those companies didn't get the chance to fix those exploits because the agency kept them secret in order to keep using them, the documents suggest.

"Serious vulnerabilities not disclosed to the manufacturers places huge swathes of the population and critical infrastructure at risk to foreign intelligence or cyber criminals who independently discover or hear rumors of the vulnerability," a WikiLeaks statement read. "If the CIA can discover such vulnerabilities so can others."

WikiLeaks noted that those unfixed exploits affected everyone using the equipment, including "the U.S. Cabinet, Congress, top CEOs, system administrators, security officers and engineers".

6) More information is coming

The documents have still not been looked through entirely. There are 8,378 pages of files, some of which have already been analysed but many of which hasn't.

The files are being shared publicly on the WikiLeaks website and the organisation has encouraged its supporters to keep looking through the documents in the hope of finding more stories.

And that's not to mention the other sets of documents that are coming. The "Year Zero" leaks are just the first in a series of "Vault 7" dumps, Julian Assange said.