Optic Nerve (GCHQ)
| Company type | Mass surveillance initiative |
|---|---|
| Industry | Intelligence, Surveillance |
| Founded | 2008 |
| Founder | Government Communications Headquarters (GCHQ), National Security Agency (NSA) |
| Headquarters | United Kingdom, United States |
Area served | Worldwide |
| Products | Webcam image collection and analysis |
Optic Nerve is a mass surveillance initiative managed by the British signals intelligence organization Government Communications Headquarters (GCHQ), with collaboration from the US National Security Agency. The programme secretly collected still images from private webcam sessions of users utilizing a Yahoo! webcam application. Over a span of six months, it reportedly amassed images from approximately 1.8 million Yahoo! accounts worldwide. Initially disclosed in February 2014 through leaks by former NSA contractor Edward Snowden, Optic Nerve began as a trial project in 2008 and remained operational until at least 2012.
According to the leaked files, the surveillance was described as "unselected," indicating that data was gathered indiscriminately, primarily impacting innocent individuals without any suspicion of illegal activity. Optic Nerve captured one still image every five minutes for each user, aiming to adhere to human rights regulations. These images were stored in a searchable archive and utilized for facial recognition testing, tracking known subjects, and discovering new targets. Yahoo! was singled out because it was "known to be used by GCHQ targets." In contrast to the US NSA, UK legislation does not mandate GCHQ to limit collection from domestic citizens, meaning UK-based users could have been equally subjected to surveillance.
The information was first published in The Guardian in February 2014, based on documents dating from 2008 to 2012. Yahoo! strongly criticized the programme as "a whole new level of violation of our users' privacy." A GCHQ representative declined to provide comments regarding intelligence operations.
Although bulk data searches were confined to metadata, security personnel could access "webcam images linked with similar Yahoo identifiers to your known target," enabling targeted image examination within the broad collection system.
Technical details
Optic Nerve functioned by gathering data through GCHQ’s widespread network of Internet cable taps, employing technology developed by the United States' National Security Agency. NSA research contributed to the creation of tools designed to isolate webcam traffic.
Because Yahoo! Messenger conversations and webcam streams were transmitted without encryption, capturing this data was relatively simple. Following the Snowden disclosures, Yahoo! announced plans to implement encryption for all user communications by April 2014.
Sexually explicit images
An estimated 3% to 11% of the collected webcam images contained sexually explicit content and were categorized as "undesirable nudity."
Other webcam traffic targets
Documents indicated an interest in surveilling video feeds from the Xbox 360 and Xbox One Kinect cameras; however, Microsoft stated it had no knowledge of such surveillance activities.