SaveDefense, which is a renamed version of SaveSoldier, TrustNinja, is classified as rogue anti-spyware software, due to the fact it makes use of misleading methods in order to coerce unsuspecting users into purchasing its full license version. As is typical of rogue applications, SaveDefense employs the use of false scan results and fake security warnings to carry out their main goal of creating purchase orders for their misleading software. SaveDefense will state that the computer in question is infected with a variety of Trojan infections, adware or malware and that you should purchase SaveDefense to remove these infections.
Never forget that these infections are all fictitious and don't actually exist on the computer. SaveDefense is installed via the use of Trojan infections, such as the notorious Zlob or Vundo. SaveDefense might also be promoted on various affiliated malicious websites. Once active, SaveDefense will ostensibly scan your computer and list various fake infections or security issues. The computer will then also be bombarded with very annoying pop-up messages and security alerts.
Obviously, these alerts are also fake. If your computer is infected with SaveDefense, make sure you remove it and all its affiliated components!