Rumor of Alleged Attack

Original 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

Email: cert@cert.org
Phone: +1 412-268-7090 (24-hour hotline)
Fax: +1 412-268-6989
Postal address:
CERT Coordination Center
Software Engineering Institute
Carnegie Mellon University
Pittsburgh PA 15213-3890
U.S.A.

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.

Using encryption

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.

Getting security information

CERT publications and other security information are available from our web site

* "CERT" and "CERT Coordination Center" are registered in the U.S. Patent and Trademark Office.


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Copyright 1990 Carnegie Mellon University.


Revision History
September 17,1997  Attached copyright statement