Bagle worm attacks leave AV defences struggling  Antony Savvas
Anti-virus software companies are reporting a "wave" of Trojan
spam e-mail attacks being spread by up to 15 variants of the
Bagle worm.  The high number of variants to the worm is making
it difficult for anti-virus companies to update their security
signatures to protect users from infection.   As a result anti-
virus companies are warning customers not to rely only on their
desktop and server security software, and to be extra careful
about what e-mails they open, to avoid infection.  Some of the
Trojans, being spread by a world network of "zombie" computers,
are being used to install malicious remote monitoring software
on users' machines, enabling criminals to monitor PC usage and
steal personal details to commit fraud.  Zombies are user PCs
that have been taken over remotely by criminals to spread
malware without the users' knowing their machines have been
infected.  Ken Dunham, director of malicious code at internet
security firm, said, "The