http://arstechnica.com/gaming/2012/07/ubisoft-drm-exploit-opens-pcs-to-security-risk/
Ubisoft DRM exploit opens PCs to security risk (update) " now Please "
Users should remove browser plug in for protection. (or update)
UPDATE: Ubisoft has pushed out a patch to correct the issue described below, and urges all Uplay users to "update their Uplay PC application without a Web browser open" to fix the plug-in. Alternatively, user can re-install Uplay using a patched installer available at Uplay.com
ORIGINAL STORY
Ubisoft hasn't exactly garnered much goodwill among PC gamers thanks to the controversial DRM efforts it has attached to its PC releases over the years. That goodwill seems likely to decline even more with the revelation that installing the company's UPlay game management system can apparently open up your computer to malicious code insertion.
https://news.ycombinator.com/item?id=4311264
Ubisoft "Uplay" DRM exposed as rootkit
Ubisoft installs a backdoor that allows any website to take over your computer. The Sony BMG rootkit was also DRM and required product recall when it was discovered.