Security vendor mass-mails worm to clients
 

F-Secure apologises for sending customers Netsky.B via mailing list.
Antivirus firm F-Secure has apologised for sending the Netsky.B virus to several thousand of its UK customers and partners via a mailing list.
The email apology said: "Because of a human error, you may have received an email infected with the Netsky.B virus that was relayed through our external email list server and was resent to our UK mailing list.
:Graucho
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Its worse when its from a sponsor. I remember getting one from Bumble Cash. It said read immediately about payments. Got one from Toolbar Cash too :(