STIR/SHAKEN protocol

STIR/SHAKEN is a set of technical standards designed to combat caller ID spoofing and reduce illegal robocalls. It works by verifying the authenticity of a phone call's origin—ensuring that the person or company calling is genuinely who they claim to be. When a call is made, the network checks the caller's information and assigns a digital signature if it's legitimate. The recipient's phone then verifies this signature to confirm the call's authenticity. This system helps carriers and consumers distinguish genuine calls from fraudulent ones, making phone communication more trustworthy and reducing scams.