It is best to avoid downloading and installing software from random Internet sites that have nothing to do with PC maintenance.
The rogue products initially looked like a generic security product, addressing a range of system issues with names like HDDDDiagnostic, PCoptomizer and Privacy Corrector, according to GFI. Since then, there’ve been a series of “defragger clones” with names like UltraDefragger and ScanDisk that claim to find read/write errors on the hard disk drive, according to the blog.
The fake disk defrag and scanning utilities started showing up in mid-October, according to Deepen Desai, senior researcher from SonicWALL’s threats team. He noted that new variants are often “A/V resistant” because legitimate security products may not be able to immediately identify the files as fake. Rand Abrams, director of technical education at ESET said these variants are “not yet as popular as they will become.”
Scareware refers to software that displays legitimate looking pop-up windows and dialog boxes claiming serious problems with the user’s computer. Often posing as anti-virus or anti-spyware software, the messages list several malware infections and scare the user into purchasing anti-virus software immediately to fix the problem. Some known variants mimic Microsoft Security Essentials or McAfee, while others have real-sounding names such as Security Tools or Pest Detector.