How LTE IMSI Catcher works and how can decode GUTI with SigintOS™

LTE IMSI Catcher is not myth!

LTE IMSI Catcher Works!
Due to the nature of LTE base stations, the capture of IMSI numbers seems impossible. LTE stations use GUTI to communicate with users instead of IMSI. The GUTI contains the temporary IMSI number called TMSI. This allows the operator to find out who is at the corresponding LTE station who is authorized to query TMSI information.

Can the GUTI number be found?
Answer Yes!

How to find GUTI and TMSI numbers?