Global Tracking of People via Mobile Networks

Introduction A recent client was concerned that their Directors were being tracked and their location (Country) was being published and updated regularly on a stalker website.  The website contained the Company name, Directors name, and the name of the Country they currently resided in followed by the Country’s flag.  The question arose; How are they tracking us? Initial thoughts were that something quite simple or trivial was happening such as…

What is SIGTRAN? SS7? SCTP?

Introduction SIGTRAN is the name, derived from signaling transport, of the former Internet Engineering Task Force (IETF) working group that produced specifications for a family of protocols that provide reliable Datagram service and user layer adaptations for Signaling System 7 (SS7) and ISDN communications. The SIGTRAN protocols are an extension of the SS7 protocol family. It supports the same application and call management paradigms as SS7 but uses an Internet Protocol (IP) transport called Stream Control Transmission Protocol (SCTP). Indeed,…