Security researchers say the Diameter protocol used with today's 4G (LTE) telephony and data transfer standard is vulnerable to the same types of vulnerabilities as the older SS7 standard used with ...

Financially bullish communications carriers are starting to migrate existing circuitswitched, time-division-multiplexing (TDM) networks to Internet Protocol (IP) packet networks and roll out new VoIP, ...

For years, experts have warned of vulnerabilities in the network that routes phone calls and cellular service — but those attacks may be more widespread than anyone realized. For more than a year, a ...