Rumor of Alleged AttackOriginal issue date: November 16, 1990
Last revised: September 17, 1997
Attached copyright statement
A complete revision history is at the end of this file. There have been several recent reports in the media and other places about an alleged attack on some telephone systems, apparently in response to the sentencing today in Atlanta of three members of a computer intruder group called "Legion of Doom". As of this time (Nov. 16 at 4:30 PM EST), CERT/CC has not received any evidence to substantiate this rumor.
Caution (not panic) is advisable.
This document is available from: http://www.preview.cert.org/advisories/CA-1990-10.html
CERT/CC Contact Information
CERT Coordination Center
Software Engineering Institute
Carnegie Mellon University
Pittsburgh PA 15213-3890
Phone: +1 412-268-7090 (24-hour hotline)
Fax: +1 412-268-6989
CERT/CC personnel answer the hotline 08:00-17:00 EST(GMT-5) / EDT(GMT-4) Monday through Friday; they are on call for emergencies during other hours, on U.S. holidays, and on weekends.
We strongly urge you to encrypt sensitive information sent by email. Our public PGP key is available from
If you prefer to use DES, please call the CERT hotline for more information.
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CERT publications and other security information are available from our web site
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Copyright 1990 Carnegie Mellon University.
September 17,1997 Attached copyright statement