I’ve talked before about fake anti-virus and anti-spyware programs. Normally you can write down the name of the suspicious program and Google it or go to respected review sites for answers.
Now, maybe not.
The newest fake anti-virus, Antivirus-1 or AntiVirus2010, will change the listing of known good websites contained in your browser(this is called the hosts file), and if you try to go to a well-known website like PC magazine, ZD Net, etc. the fake antivirus will re-direct your browser to a fake site controlled by the virus’ author, where it will show glowing, wonderful reviews about the fake anti-virus program.
The best way to avoid this is to have a good anti-virus program running and updated. Also, it is good to be suspicious of any program you dont remember installing.