Beware IMs bearing attachments
Don't open any attachment received unexpectedly - verify that the
sender intended it. Make sure you enable file extension viewing so
you're not fooled by the infamous double-extension ruse. Before
opening any attachment, scan it first using up-to-date antivirus
software.
More is *not* merrier
Keep the number of IM clients to a minimum. IM worms target specific
clients, though multiple clients might be targeted. For example, the
2002 FloodNet IM worm sent its infectious message to both AIM and
MSN Instant Messenger users. Thus, the more IM clients used or
supported, the more likely you are to be victimized by an IM worm.
What to do if infection strikes
If you do get hit by an IM worm, remember that all of your contacts
are now vulnerable. To avoid sending the infection to others,
disconnect from the Internet until you are able to completely remove
the infection. If you need Internet access to obtain
antivirus
software or updates, ask a friend
to use their computer and burn the files to CD.
If this is not an option, uninstall
the IM client until after you've properly cleaned the infection. Of
course, always keeping your antivirus software up-to-date will avoid
this last minute scramble for protection. |
