Before the band members had played a single live show, their home recordings generated significant interest online. The song Rational Eyes hit #1 on the international independent music website GarageBand.com and remained in the top position for over 2 years. This prompted many record labels to take notice. One label in particular was a perfect fit with the bands vision, and in 2005 Threat Signal inked a deal with Nuclear Blast Records.

Threat Signals debut album Under Reprisal was recorded in Los Angeles, California with producer Christian Olde Wolbers (Fear Factory). It is without a doubt my favorite album of 2006, remarks Olde Wolbers. A mix of Strapping Young Lad, Fear Factory, Soilwork … a true Canadian phenomenon! Veteran mixer Tue Madsen was brought in to add the finishing touches to the album, which was released internationally in August 2006. Embraced by both fans and critics, perhaps the most meaningful praise for the album came in the form of the Canadian Recording of the Year award bestowed upon the band in their hometown at the 2006 Hamilton Music Awards.

After spending most of 2007 on the road in support of Under Reprisal, the guys in Threat Signal are working on their second album, due for release in late 2008 or early 2009.