Title: Potentially Undesirable Images
Release Date: 2014-02-28
Document Date: 2010-01-01
Description: Extracts from a GCHQ’s internal GCWiki, last accessed in 2012, describe some of the privacy implications of the agency’s Optic Nerve tool: see the Guardian article Optic Nerve: millions of Yahoo webcam images intercepted by GCHQ, 28 February 2014.
• At the moment OPTIC NERVE’S data supply (run by B13) does not select but
simply collects in bulk, and as a trade-off only collects an image every 5 minutes.
It would be helpful to incorporate selection and collect images at a faster rate
(all?) for targets. CS to find out from B13 if this is feasible.NSA-ragout-2-001.jpg:
feditl Potentially Undesirable Images
We use face detection to try to censor material which may be
offensive but this does not work perfectly so you should read
the following before using OPTIC NERVE:
• It is possible to handle and display undesirable images.
There is no perfect ability to censor material which may
be offensive. Users who may feel uncomfortable about
such material are advised not to open them.
• You are reminded that under GCHQ's offensive material
policy, the dissemination of offensive material is a
• Retrieval of or reference to such material should be
avoided; see IB 150 for guidance on dealing with