BlockScanner, which is also known as Block Scanner, 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, BlockScanner 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.

BlockScanner will state that the computer in question is infected with a variety of Trojan infections, adware or malware and that you should purchase BlockScanner to remove these infections. Never forget that these infections are all fictitious and don't actually exist on the computer. BlockScanner is installed via the use of Trojan infections, such as the notorious Zlob or Vundo. BlockScanner might also be promoted on various affiliated malicious websites. Once active, BlockScanner 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 BlockScanner, make sure you remove it and all its affiliated components!