Secure Telephone Identity Governance Authority

The Secure Telephone Identity Governance Authority (STI-GA) is a critical body helping the industry achieve success in mitigating the problem of unwanted robocalling. Working with the IETF’s STIR (Secure Telephone Identity Revisited) protocol, the ATIS-SIP Forum Signature-based Handling of Asserted information using toKENs (SHAKEN) specification specifies a practical mechanism for authenticating calls. Attaching a “digital signature” will help consumers to once again trust their caller ID.

ATIS works with the STI-GA Board to define the rules governing the certificate management infrastructure to ensure effective use and security of SHAKEN certificates



  • Linda Vandeloop
  • Glenn Clepper
    Vice Chair
    Charter Communications; appointed by NCTA – The Internet & Television Association
  • Brent Struthers
    Director, STI Governance Authority
  • Indra Chalk
    T-Mobile; appointed by CTIA
  • Darah Franklin
  • Dave Frigen
    Wabash Communications; appointed by NTCA – The Rural Broadband Association
  • Gunnar Halley
    Microsoft; appointed by the VON Coalition
  • Beth O’Donnell
  • Clinton Lee
    Jackson Energy Authority; appointed by the American Cable Association
  • Philip Linse
    Lumen; appointed by US Telecom
  • Greg Rogers
    Bandwidth; appointed by INCOMPAS
  • Michael Starkey
    Appointed by Western States CLEC Coalition/TEXALTEL
  • Nathan Sutter
    Nex-Tech Wireless; appointed by the Competitive Carriers Association