Fake / misleading online scanner page distributing and promoting rogue "System Security":
http://websecurityexamine.com/scan/index.php
which closes the browser window and reads:
"Warning!!!Your computer contains various signs of viruses and malware programs presence.Your system requires immediate anti viruses check! System Security will perform a quick and free scanning of your PC for viruses and malicious programs."
Even clicking "quit" it opens a fake javascript online scanner and a well imitated "Windows Security Alert" notification to scare and trick the user of PC infection. The final purpose is the sell of this fake security software.
Note that the setup file of the fake security software is changed every couple of days to avoid being detected by real antiviruses as malicious:
http://www.virustotal.com/analisis/6b260cb26aa9c3c3356de3cdb33ad154

This site is part of a large cybercrime gang: http://en.wikipedia.org/wiki/Russian_Business_Network

Some other clones of this site, all distributing malware:
netisecurity.com
netsecurityonline.com
netsafetypc.com
netsecuritytech.com
netsecuritybureau.com
netdigitalsecurity.com
unitedsecuritytech.com
websecuritydirecti.com

Never trust a site that conducts a scan on your PC without your consent and which suddenly says that your PC is infected!

yet another fake scan trojan download site