• Threat Level: Low
  • Description: 404 Search is a BHO Toolbar distributed by, that according to its license "offers free downloadable software that allows users to receive enhanced web features and search results in the form of but not limited to pop-up, pop-under or exit-pop HTML pages which will appear during your internet session, while browsing the Web. The pop-up advertisements will contain different forms of media including but not limited to graphical advertisements and paid search listing advertisements that are based on the context or interpreted meaning of the websites that you are visiting or may have visited in the past."
  • Type: TT_Adware
  • Threat Analysis: Search ThreatExpert to view reports
  • Removal: This infection can be removed using Spyware Doctor.

More Information:

With new threats to your PC emerging every day, it's essential to maintain up-to-date antivirus software in order to fend off the latest viruses, worms, and Trojans. But before implementing the proper defense, it's necessary to identify the malware that's capable of infecting your PC. And that's where the PC Tools Malware Research Center comes in. The highly specialized MRC team is dedicated to researching the most recent threats and updating its database of known infections accordingly. That way, PC Tools can constantly update its award-winning antivirus and antispyware software, making it practically impenetrable. Whether it's a Trojan, worm, virus, or spyware—if it's found within MRC's Infection Database, PC Tools' Spyware Doctor can remove it. PC Tools goes beyond malware protection; it also highly values educating PC users about the threats they continuously face. Each piece of malware included herein contains useful information such as a description of the infection and how dangerous it is. After all, being well informed is another vital step to staying safe.