Farouk Abdul-Mutalab the underwear bomber who attempted to blow up an airliner on christmass day and who has since been sentenced to life in the US frequented an Islamic forum and in one of many threads he created under the handle farouk1986 he asked on what warrants the act of Taqiyya.

Here is his post

Asslamu alaykum

when is lying allowed to deceive the enemy? I know the prophet (S) allowed someone to say he didn't believe in Allah so that he will not be killed (or tortured- not too sure). so thisthe only case when tht deception is allowed/

ma'assalam

Here is the link to the original thread which has since been locked like his ass
http://www.gawaher.com/topic/18059-lying-to-deceive-the-enemy/

and here is the screen shot below