6 June 1998: Add message

17 April 1998: Link to GSM crack

17 March 1998
Thanks to UT11

This is a highly informative site on electronic surveillance.

From: "UT11"
To: <jya@pipeline.com>
Date: Tue, 17 Mar 1998 15:07:50 +0100

ACTUALLY 100 MILLIONS OF GSM ARE GEOGRAPHICALLY & AUTOMATICALLY
TAPED & STORED FOR 4 MONTHS

http://www.cybourse.be/interception [URL revised 24 March 1999]

http://www.dejanews.com  (keyword: location GSM, title: interception)



Date: Sat, 06 Jun 1998 12:56:30 +0200

Thanks to add & correct to http://jya.com/gsm-snoop.htm

In a ZONE OF LOCALISATION (group of cells: 4-6), the network
doesn't know in which cell the GSM standby is. The reason is
that each operator sends a periodic (2 times per hour )
location updating the signal between BTS and GSM. This log is 
kept a certain time by each operator: COMTEC in Norway, SFR 
in France: 2 days, Swisscom to 1997: 6 mois, DeteMobil in 
Germany: 2 weeks,... A Swiss federal commission is investigating
Swisscom (http://www.edsb.ch) from 1.98 to 7.98 concerning 
this log giving the position (1-10 km) of each GSM in standby.