"'''Survivalism'''" (also known as '''''Halo 23''''') is the first [[single (music)|single]] by [[Nine Inch Nails]] from their 2007 album ''[[Year Zero (album)|Year Zero]]''. The song is to be the third track on the album.
source: http://yearzero.nin.com
source: http://www.fmqb.com/Article.asp?id=350363
A clip of what appears to be the chorus to "Survivalism" can be heard by calling the telephone number 1-310-295-1040, which was found on [[Valentine's Day]] 2007 by joining discolored numerals on the back of a tour t-shirt.
source: http://www.echoingthesound.org/phpbbx/viewtopic.php?t=20317