Documents leaked by Edward Snowden reveal GCHQ intercepted webcam images from millions of Yahoo users around the world. GCHQ collected images from more than 1.8 million Yahoo user accounts globally in a six-month period in 2008 alone. The agency gathered the images with the National Security Agency (NSA) GCHQ refused any accusation highlighted in an emailed statement that it is a longstanding policy that we do not comment on intelligence matters Yahoo was not aware of the intelligence activity as explained by a company spokeswoman.”]
Source: https://securityaffairs.co/wordpress/22647/intelligence/optic-nerve-gchq-yahoo-surveillance.html