Tobias Engel's initial video about this was "Locating Mobile Phones using SS7" given at the 25C3 in 2008: https://media.ccc.de/v/25c3-2997-en-locating_mobile_p

Tobias Engel's initial video about this was "Locating Mobile Phones using SS7" given at the 25C3 in 2008: https://media.ccc.de/v/25c3-2997-en-locating_mobile_phones_using_ss7 https://media.ccc.de/v/25c3-2997-en-locating_mobile_phones_u...