A security vulnerability in Signaling System 7 (SS7) make it possible for a hacker to intercept your phone calls, read your text messages, and determine your movements – all they need is your phone number.
SS7 is an international telecommunications standard developed to manage call set-up, management, and tear down.
SS7 defines how network elements in a public switched telephone network exchange information over a digital signalling network.
The SS7 vulnerability is not new. SR Labs warned of it in 2008, but it was not until 2014 – when the vulnerability was demonstrated at a conference – that people started to take note.
In 2014, researchers warned that vulnerabilities in the protocol threatened users’ privacy, and could lead to user tracking, fraud, denial of service, and call interception.
The issue made headlines again in January after a 60 Minutes report highlighted the dangers of the security weakness. For the full article click here
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