Media playback is unsupported on your device

Why British and US spies are infiltrating online games

13 December 2013 Last updated at 15:21 GMT

US and British intelligence agencies are reported to have infiltrated online games played by millions of people.

The spies have been trying to identify terrorist threats by observing messaging and payment systems used in the games. And Microsoft is warning owners of its new Xbox One of an internet prank that could ruin their consoles.

BBC Click's Spencer Kelly looks at these and other tech news stories.

Watch more clips on the Click website. If you are in the UK you can watch the whole programme on BBC iPlayer.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.