TEMPORARY IMSI

GSM Glossary

GSM — Temporary IMSI

 

 

 

 

 

 

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Information on Temporary IMSI (TIMSI)

Once a mobile phone has affiliated, the network allocates a temporary IMSI (TIMSI), which is used to identify the subscriber in future exchanges. This provides limited anonymity, or privacy. In order to track a user ina GSM network, an eavesdropper must intercept the original exchange between the network and mobile .phone as well as all subsequent exchanges in which the value of the temporary IMSI (TIMSI) is changed.


Other topics in our resources on GSM related to Temporary IMSI include: 
 
  • international mobile subscriber identity (IMSI)
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