In this latest investigative article SOS intelligence researchers will be taking a look at alleged SS7 exploitation services on the Dark Web and diving into their credibility using SOS Intelligence analytics toolkit.
SS7 Significance & Background
Signalling System 7 is a telecommunications protocol adopted internationally that defines how the network elements in a public switched telephone network (PSTN) exchange information and control signals.
The signalling transport (SIGTRAN) protocols proved interoperability of SS7 signalling to operate over IP based networks. This enables PSTN services to operate analogue telephone systems and modern IP network equipment. SIGTRAN uses its own Stream Control Transmission Protocol (SCTP) as opposed to TCP or UDP (Transmission Control Protocol or User Datagram Protocol)
Source: SOS Intelligence