Join us for an engaging webinar as we delve into the intricacies of call authentication, specifically the Consolidated Signing Service Provider (SSP) Matrix of Attestation found in Appendix A of the 2020 CATA (Call Authentication Trust Anchor) Working Group’s report, “Best Practices for the Implementation of Call Authentication Frameworks.” Attestation levels play a crucial role in verifying the legitimacy of caller identity, and this webinar aims to provide a comprehensive understanding of attestation and its implications.
Our expert panel of hosts will explore the factors that contribute to the appropriate assignment of attestation levels: A (full), B (partial), or C (gateway). We will analyze the significance of each factor and its impact on attestation, while also addressing the challenges faced by Consolidated Signing Service Providers (SSPs) when determining attestation levels. This includes considerations such as connectivity limitations and indirect connections between service providers and call originators.
Through thought-provoking discussions and practical examples, we will shed light on the nuances of call authentication and its relationship to the Consolidated Signing Service Provider (SSP) Matrix of Attestation.
Whether you are a telecommunications professional, a call authentication enthusiast, or a policymaker, this webinar offers valuable insights into the complexities of attestation and a deep dive into “Best Practices for the Implementation of Call Authentication Frameworks” and its implications for ensuring trust and security in call authentication.
.png)
With 10+ years of experience in risk mitigation and customer policy creation, Sarah is an industry expert in trust solutions through her enhanced Know Your Customer (KYC) toolsets to drive digital identity innovation to strengthen trust in customer communications. She works with enterprises, carriers, service providers, and industry organizations to find and build scalable solutions for validating identity in communications.
Sarah has a rich background leading teams in driving fraud and risk management strategies and customer lifecycle management. Her work in support of the delivery of compliant traffic to minimize scam/spam or non-compliant messaging traffic and efforts to build trusted voice solutions give her the expertise to recommend KYC best practices for identity vetting and call authentication.

With an expansive career, Pierce’s voice has been influential in shaping the standards, architecture, and deployment of technologies critical to the continuous advancement of the telecommunications industry. Prior to Numeracle, he was responsible for voice authentication development for VoIP robocalling and STIR/SHAKEN call authentication design and standards deployment.
His contributions to the industry include membership in four ATIS working groups, all three FCC NANC-CATA Working Groups, the STI Governance Authority (GA) Technical Committee on behalf of T-Mobile, the CTIA, USTA, Industry Traceback Group, SIP Interconnection Working Group hosted by NTCA, and the Internet Engineering Task Force (IETF) Secure Telephone Identity Revisited (STIR) Working Group, making him an industry veteran and expert speaker for Numeracle’s discussion on KYC identity verification for call authentication.
.png)
Brett Nemeroff is a highly accomplished telecom engineer with over 25 years of experience in the telecommunications industry. Throughout his illustrious career, Brett has demonstrated expertise in various roles, both as a service provider and a service consumer, shaping the dynamic landscape of the telecommunications sector.
Brett's journey in the industry has been marked by numerous achievements, including playing a pivotal role in establishing phone companies from the ground up. His unwavering dedication and contribution to the design and implementation of expansive metropolitan fiber optic networks and versatile voice-switching networks have been instrumental in driving technological advancements.
With an in-depth understanding of both traditional SS7 and VoIP technologies, Brett possesses a comprehensive grasp of the intricate workings of telecommunication systems. This invaluable expertise has allowed him to navigate complex challenges and develop effective solutions tailored to meet the ever-evolving needs of the industry.
Notably, Brett has also led development teams in constructing cutting-edge Software-as-a-Service (SaaS) platforms that seamlessly integrate telecommunications functionalities into popular CRM solutions such as Salesforce and Microsoft Dynamics. This unique fusion of telecom engineering and software development expertise has given him profound insight into the requirements and challenges faced by both providers and customers.
As an ardent technologist, Brett's primary passion lies in bridging the gap between enterprises and innovative technological advancements. His extensive background enables him to forge collaborative partnerships, unlocking untapped potential and creating substantial value for businesses.