Continuing the fight against unwanted robocalls, carriers T-Mobile US and Sprint say they have implemented STIR/SHAKEN number verification across their networks. The two companies called the effort “an important step in the industry’s ongoing fight against unwanted scam and spam calls.”
STIR/SHAKEN, or Secure Telephone Identity Revisited (STIR) and Signature-based Handling of Asserted information using toKENs (SHAKEN), is a framework for ensuring the authenticity of a given call—that it is actually coming from the number and/or caller ID which is displayed and not being spoofed, which is a common tactic for unwanted and/or malicious spam calls.
