SwatIt can be used for the removal of trojans and bots - The basic version is free and it scans your files for trojans, bots and other hacker programs. It is claimed that it can detect and remove over 3000 different trojan programs plus variants. It is important to remember that o­nce the installation of Swat It is completed, that you should update the File Signatures by clicking o­n the Update tab. All Product and File Signature Updates are Totally FREE.