...government departments and key overseas sites. It appears that complexity was underestimated. The system operates at the "topsecret" level of electronic security. The Cabinet Office claimed to Computer Weekly in August 2007 that, after some...
http://www.computerweekly.com/232453.htm
...encrypted internal drives for up-to-TopSecret information Published 31st March...drives and USB disks for up-to-TopSecret information, making high level data...protective marking of data at rest from TopSecret to Confidential. Previously such...
http://www.itbprinter.com/pr/26230