CESG releases new guidance for secure voice technology
Risks to voice data
Voice data is subject to a number of key threats:
- calls are placed to or received from an attacker and the user doesn't realise, resulting in compromise of spoken data
- attacker with privileged network access can access all call content and metadata for a user on that network
- attacker compromises a cellular base station, or uses a false base station, and gains access to all call content and metadata for all users on that base station
- attacker could cause calls to be routed via infrastructure they control (e.g. offering low-cost routing), enabling interception
New CESG guidance
Secure Voice technology is changing rapidly, and CESG policy is evolving to keep up with the pace of change.
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