Ok, two nasty little vulnerabilities people should be aware of have popped up.
First, late last week, a security hole in MS Word was revealed and a corresponding trojan virus that takes advantage of it. More information can be found here:
http://www.kb.cert.org/vuls/id/446012
http://www.theregister.co.uk/2006/05/22/trojan_exploit_word_vuln/
There is no patch yet from Microsoft, so follow best practices, don’t open documents/files you weren’t expecting to recieve from people.
Second there is a trojan worm going around that likes to attack yahoo instant messenger users. It will send a link to a website to your IM contacts encouraging them to download and install a “Safety Browser”. Of course there is nothing safe about it. More information here:
http://www.theregister.co.uk/2006/05/22/safety_browser_im_worm/
Again, don’t click on links you aren’t 100% sure of, even when they look like they’ve come from a friend.