Hi Falko and Till
During last weeks I detected increasing number of infected webs from stolen FTP account. This account was stolen from saved passwords in Total Commander on clients computers thru trojan virus.
I know that best solution is installing linux on clients computers
but untill they will do it ... the good solution is specify one or more IP's allowed to access account. Proftpd has very good system to specify which user can access to his account including possibility to specify IP address. Informations about this system is avalable on http://castaglia.org/proftpd/doc/con...WTO-Limit.html