Kaspersky has introduced Anti-Virus for Mac, a port of its long-running Windows and Linux software designed to cope with threats such as worms, Trojans and bots. Some features include e-mail and attachment protection, as well as download scans, and alerts on blocked files and programs. The software recognizes up to 30,000 threats; self-protection functions guard settings with a password, and attempt to prevent techniques from being modified or deleted.