(Many rookies don't know much about security issues, so they don't know how to remove the "Trojan" in their computer. Although there are many new versions of anti-virus software that can automatically remove "Trojan horses", they cannot prevent new "Trojan horse" programs, so the most important thing is to understand the working principle of "Trojan horse", so that it will be easy "Trojan Horse" found. I believe that after reading this article, you will become a master of killing "Trojan horses"...)