Clearing the air: Bioshock does not contain a rootkit
 

This weekend news spread quickly that the PC version of Bioshock comes loaded with a rootkit. The only problem is, it isn't loaded with a rootkit, it's just your standard "let's punish our customers" anti-piracy tool. However, since rootkit accusations are very serious, we thought we'd look into it.

http://arstechnica.com/news.ars/post...a-rootkit.html