Once the Trojan downloads and installs Security Shield to a computer system it is also configured to start automatically when computer is rebooted. The same thing happens after each computer reboot. First of all Security Shield runs its scanner which doesn't look for real infections indeed. System scan is only imitated and in the end it displays fake infections. However, Security Shield will be insisting to get rid of them stating that their presence on your computer can cause some serious damage.
And that is not the only inconvenience. Additionally, Security Shield shows up tons of security tray alerts and pop up ads that warn about spyware infiltration to your system. Both the scanner of Security Shield and the above mentioned alerts are followed by an offer to purchase a full version of Security Shield application.
Please don't fall for this trick as in reality this program has nothing to offer. Security Shield was created by cyber criminals in order to rip computer users off. Every single alert by this malware is fabricated in order to trick the user of infected computer.
You must do all it takes to remove Security Shield from your computer. It is strongly recommended to get a reputable anti-spyware program which will not only fix Security Shield malware, remove other existing infections but also protect from future spyware attacks.