Securityonlinesite.com is a browser hijacker that modifies Internet Explorer main page and redirect search page to a fake security websites called System Security. System Security is an alleged antispyware/virus application that uses Trojans and other malware into tricking or scaring you into purchasing it. Securityonlinesite.com is dangerous for you and your PC so remove it as soon as possible

Read more about System Security »

Source: http://www.removeonline.com/remove-securityonlinesitecom/