Just got this warning from a user on the Combat Testing Forums.
QUOTE
"Just received this message from a mate of mine who also has a Steam Account.
We can not confirm how true this is but better to be safe than sorry.
Never tell your password to anyone.
crisp_n_dry: [Just got this message off someone else]If someone by the name of (Ashley Marc James) wants to add you to their list don't accept it. It is a virus. Tell everyone on your list because if somebody on your list adds him or her you will get it too. It is a hard drive killer and a very horrible virus. Please pass this on to everyone on your list. We need to find out who is using this account"
END QUOTE
Better safe than sorry I say