Bagle worm's vicious new variants

Have you been getting a lot of emails with attachments this week? Don't click! Tell your kids not to click on attachments unless they call/email the friend first to make sure s/he sent that email! These represent variants of the Bagle worm that pack a triple threat to family PCs, ZDNET reports. First, it emails itself to everybody in your email address book. Second, it puts a "Trojan" on your PC that blocks anti-virus software updates and access to Windows Update . Third, it installs a second Trojan that disables firewalls and anti-virus software altogether. Having done all that, the malicious hackers sending out the worm can now control your PC and network it into a "botnet" - "groups of networked machines, often numbering in the thousands, that are hired as spam relays, for tracking users' behavior and for identity theft."