From: cgdemarc@ai.mit.edu (Carl de Marcken)
Date: Fri, 12 May 95 14:39:22 EDT
To: all-ai
Subject: GSB Friday, May 12, 5:30 7AI



In light of the recent "Unabomb" letter-bomb attacks, we have installed a
filter on life that should protect the lab from most explosive e-mail
messages.  But, as a precaution, here are some tips for how to recognize an
e-mailed letter-bomb.  If you think you have received a letter-bomb, delete
the message IMMEDIATELY.  DO NOT READ IT UNDER ANY CIRCUMSTANCES!

Common Characteristics of E-Mail Letter Bombs:

1. Incorrect or mistyped address on message.  For instance, a message sent
   to "all-ai" but delivered to you should be deleted immediately.

2. Excessive re-routing from strange locations:

	Resent-From: cc.fc.ul.pt@cc.fc.ul.pt
	Old-Received: from nora.hd.uib.no by alfie.uib.no with SMTP (PP) id 
	              <22318-0@alfie.uib.no>; Fri, 12 May 1995 00:44:57 +0200
	Old-Received: from skull.cc.fc.ul.pt by nora.hd.uib.no with SMTP
		      id AA04488 
	              (5.65c8/IDA-1.4.4 for <CORPORA@hd.uib.no>); Fri, 12 May 1995 
	              00:48:20 +0200
	Old-Received: from skull.cc.fc.ul.pt by skull.cc.fc.ul.pt id aa25591;
		      12 May 95 0:44 LISBOAHV

   To protect their anonymity e-mail bombers will often send their messages
   through a variery of intermediaries, probably in Finland.

3. Oily residue on packaging, wires visible or protruding, and CAPITAL
   LETTERS in the Subject Line.

4. Messages containing strange symbols.  Most e-mail bombs are constructed
   from special text that causes the monitor to explode.  A sample
   (defused) is given below.

	begin 664 bomb
	M0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O
	M;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$*0F]O;2$@0F]O;2$@0F]O;2$@
	M0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O
	M;2$@0F]O;2$*0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@
	M0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$*0F]O;2$@0F]O
	M;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@
	M0F]O;2$@0F]O;2$@0F]O;2$*0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O
	M;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$*
	M0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O
	M;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$*0F]O;2$@0F]O;2$@0F]O;2$@
	M0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O;2$@0F]O
	*;2$@0F]O;2$*"B$@
	end


Again, should you receive any suspicious messages, please delete them
immediately and head for shelter at this week's

                    G I R L   S C O U T   B E N E F I T

in the 7th floor playroom at 5:30 today.