Trojan Redirects Firefox Browser to "Insecure Internet Activity" Hijacker Page

Trojan infection causing Firefox web browser search function to redirect users to "Insecure Internet activity. Threat of virus attack" web page.

New malicious activity was brought to our attention by a SpyHunter customer who experienced an infection that redirected his Firefox browser to a web page that recommends the download of a rogue anti-spyware program. This infection occurred every time the SpyHunter customer tried to do a search on Firefox. The SpyHunter customer had a malicious folder named xxx@xxx.com within his Firefox extensions folder, c:program filesmozilla firefoxextensions, which caused his Firefox browser to automatically redirect any web page to the "Insecure Internet activity Threat of virus attack" hijacker page that displays the following message:

Insecure Internet activity. Threat of virus attack
Due to insecure Internet browsing your PC can easily get infected with viruses, worms and trojans without your knowledge, and that can lead to system slowdown, freezes and crashes.
Also insecure Internet activity can result in revealing your personal information. To get full advanced real-time protection for PC and Internet activity, register Antivirus 2008.
We recommend you to protect your PC now and continue safe Internet browsing.
Click here to get full advanced real-time protection and continue browsing.
Continue to this website unprotected (not recommended).

The program that is mentioned on the "Insecure Internet activity Threat of virus attack" hijacker page link is Antivirus 2008 as displayed in the image below. Firefox is not the culprit of the malicious actions but rather it's a dangerous Trojan infection that is placed within the Firefox extensions folder. The "Insecure Internet activity Threat of virus attack" hijacker page appears every time the SpyHunter customer would perform any type of search on Firefox.

The creators of malware and rogue applications regularly use "Insecure Internet activity. Threat of virus attack" web page to trick computer users into downloading and purchasing rogue anti-spyware programs. If you're getting the "Insecure Internet activity. Threat of virus attack" web page, it is suggested that you do not click on the links provided as since you'll be redirected to another rogue web page, hxxp://scanning-computer-online.com (do not visit) domain, that may download and install a rogue anti-spyware program such as Antivirus 2008.

Further research will continually be conducted and updated on this issue to assist other computer users who may experience this issue in the near future.