Virus v. Trojan: not just about semantics

Whenever a new trojan appears for Linux, Mac OS X, or (now) Android, inevitably you get a crowd of ignorant panic-mongers up in arms saying “See? [fill in the blank] gets viruses, too! Ah ha! Better install that antivirus now.” Now, apart from the fact that so-called “antivirus” software is for all practical purposes useless […]