well i was just getting a bit curious about how antivirus works.well for example norton can detect any keylogger that is available on net.ok so if i make my own keylogger would it be able to detect that it is a keylogger and by the way how do they detect whether it is a virus or a not (i mean if someone wanna make his own antivirus how can he do it ).plz give me somelinks to antivirus programs or books bye for now.