Signaling System No.7 (SS7), as the protocol is known, is used by more than 800 telcos around the world, allowing customers in one country to send text messages to users in different countries.

But SS7 has been a wildly successful protocol, and is used by the vast majority of global operators across multiple generations of telecoms architecture. More modern and secure signalling systems do ...

A UK bank fell victim to a malicious SS7 attack that led to cyber-criminals emptying bank accounts at the UK’s Metro Bank, according to Motherboard. Though malicious actors have been able to exploit ...