One of those got me a bit unpopular a few months back when it send out virus loaded emails to everybody in the address list on an email that had been sent to me, with my name as sender. Some of them were people I'd never heard of till they emailed me to ask what was going on.

My anti-virus security is a bit better now, touch wood.

Here is a genuine virus warning about a particularly sneaky one. Thisnis an email I received from Pete Shaw who runs some folk sites in the UK:

I spend time debunking hoax virus warnings and telling people never to open unknown email attachments, and I have been caught by one, which I'm warning you about below.

I get regular Microsoft update announcements and what looked like another arrived from Microsoft Corporation Security Centre, email address rdquest12@microsoft.com headed Internet Security Update. The email looked genuine but advises you to run the attachment, which is q216309.exe

The attachment contains the W32Gibe@mm worm. Full details of it are at http://securityresponse.symantec.com/avcenter/venc/data/w32.gibe@mm.html

Luckily I spotted it immediately, so no-one else got it from me.

Don't open questionable attachments, although how you're now supposed to tell, now they come disguised like this, I don't know.