Insights

Building on STIR/SHAKEN: Advancing Trusted Telephone Identity at Scale

Nov 12, 2025

STIR/SHAKEN laid the groundwork for restoring trust in voice communications. But as fraud tactics evolve, so must the tools and frameworks used to defend against them. Today, the industry continues to face challenges like spoofed caller IDs, inconsistent attestation and enterprise-originated traffic that lacks clear identity validation.

In 2023, telecom carriers worldwide lost $38.95 billion to fraud (CFCA Global Fraud Loss Survey 2023). More than 136 million robocalls were placed every day in the U.S., (YouMail Robocall Index) and North America accounted for 50% of global robocall losses (Enterprise Apps Today). These numbers reinforce a simple truth: verifying the number isn’t enough; we must verify the entity behind the number.

Enter the Trust Framework

Developed by Somos, the Trust Framework builds on the foundation of STIR/SHAKEN to introduce a layered, cross-network approach to verifying the right to use a phone number. It brings together call authentication, delegate certificates, Know Your Customer (KYC)/Know Your Business (KYB) vetting and transparency services to enable trusted identity at scale.

This is not just about blocking fraud. It is about creating an ecosystem of verified, authorized communication.

Why It Matters for Service Providers

• Enable secure, branded calling for authenticated and vetted parties

• Shift enforcement and identity assurance upstream

• Strengthen compliance with TRACED Act, GDPR and emerging requirements

• Prepare networks for identity-driven communications across all channels

The Trust Framework empowers providers to move from attestation to assurance — delivering true trusted identity in every interaction. 

Download the one-pager to see how the Trust Framework can future-proof your role in the trusted communications ecosystem.