Naftali Harris is co-founder and CEO of SentiLink, a provider of best-in-class identity verification and fraud mitigation solutions.  SentiLink’s products verify customer identities and detect identity theft, synthetic fraud, and hard-to-detect forms of first party fraud.  SentiLink serves over 300 institutions – including leading banks, fintechs, telcos, and many others – and verifies over 3 million identities each day.  Prior to SentiLink, Naftali was the first data scientist at the online lender Affirm and built and led their Risk Decisioning team.  He holds a BA in Statistics from the University of Chicago, and subsequently earned an MA in statistics from Stanford, where he was a Stanford Graduate Fellow.  He lives with his family in Austin, TX.

Karl Lubenow is a seasoned Fraud Intelligence Analyst with over a decade of experience in financial services, e-commerce, and identity fraud prevention. As the first fraud operations hire at SentiLink, Karl specializes in detecting fraudulent applications, with a strong focus on identity theft. He brings deep expertise in identity fraud, synthetic fraud, SMB fraud, first party fraud, fraud claims, chargebacks, and risk mitigation strategies.

Prior to joining SentiLink, Karl also served as the first Fraud Fighter at Affirm, where he played a key role in identifying suspicious trends, influencing risk model development, and resolving high-impact risk events. His earlier experience at cleverbridge further honed his real-time fraud screening and global payment risk analysis skills, while his background in customer support laid the foundation for his commitment to service and operational excellence.

Karl holds a Bachelor's degree from the University of Illinois at Chicago and is based in Reno. Passionate about building systems that stop fraud before it starts, Karl is a collaborative and analytical force in the fight against financial crime.

Charlie Custer is the Technical Research and Content Lead at SentiLink, where he combines deep data analysis with compelling content creation to support anti-fraud innovation. After starting in investigative tech journalism and video production, he moved into technical content marketing, where he brings a unique blend of storytelling skill and analytical insight.