Do you know what is Antivirus PC Defender?
PC Defender is yet another rogue anti-spyware program. PC Defender makes use of many malicious and deceiving tactics to coerce unsuspecting computer users into purchasing the full version of PC Defender. PC Defender should not be trusted! NOTE: The full version of PC Defender is not able to detect or remove any type of computer viruses, spyware, malware or adware. PC Defender is generally downloaded and automatically installed via Trojan infections, which tend to be dangerous computer Trojan horse infections. Fictitious messages and bogus system scans are usually tell-tell signs that a computer system has been infiltrated and infected with PC Defender.
In non-techie terms:
Removal of PC Defender is recommended to rid the infected system of all malicious actions and to reduce any further damage done to the PC.
Aliases: PCDefender, Rogue.PCDefender.