Hard question to answer. There are several kinds of Trojans and each do a different thing. Always look for strange behaviours by your computer. It's a good idea to be pro active and every once in a while look at all the programs that are running in the background and look for strange or unfamiliar program names. It is also helpful to always look for listening ports on your machine. You can do this by typing Netstat -an
in a command prompt (DOS) session. Look for ports that are marked " listening
" and compare those port numbers with several Suspected Trojan port lists available on the Internet or seek help from other DSLR members in identifying the purpose of those ports.
by Wildcatboy edited by DrTCP