Phishing scam from Mauser '96 forum

[sheepherder]

Originally Posted by Ron Smith

As most of you know the 1896 Mauser forum has become " Life After People", and is now an abandoned disaster.

I just received a PM from the '96 forum. It's a Phishing scam message telling you that a virus has been detected on your account.

If you receive a PM from that forum don't open it.
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I received that email back on the 23rd...Tell me, what is the harm of opening the PM??? (I'm not all that up on phishing, virii, trojans, etc)...