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SentiLink
Naftali Harris and Max Bittker founded SentiLink in 2017 to stop synthetic fraud.
SentiLink
SentiLink was founded in 2017 by Naftali Harris and Max Bittker, two former Affirm employees who identified synthetic identity fraud as an unaddressed industry problem. They built a fraud-detection platform that uses proprietary data and machine learning models to flag fake identities at the point of application, a vector traditional credit bureaus miss. The firm's strategy spans deposit accounts, credit cards, lending, and buy-now-pay-later products. Its product suite includes synthetic fraud detection, ID theft prevention, and first-party fraud signals. SentiLink integrates via API or through alliance partners and was the first organization to use and offer eCBSV. Clients include 13 of the top 15 US banks and 6 of the top 10 credit unions. SentiLink operates from its San Francisco headquarters with a team that includes a Risk Operations unit manually reviewing applications daily. The company advises there are no disclosed external investors or adjacent vehicles. It has not publicly disclosed team size or revenue figures. SentiLink's structural differentiator is its hybrid approach: a risk operations team manually reviews cases daily, and weekly company-wide case reviews keep models fresh. This combines human context with automated detection, a model directly inherited from the founders' Affirm experience.
General information
Firm type
Asset Manager
Year founded
2017
AUM
Undisclosed
Location
Region
North America
Country
United States
City
San Francisco
Corporate office
33 New Montgomery, San Francisco, CA 94105, United States
Principals
Naftali Harris
Co-founder and CEO
Max Bittker
Co-founder
Sector focus
Frequently asked questions
Who runs investment decisions at SentiLink?
Naftali Harris, co-founder and CEO, leads the company. He was the first data scientist and later head of Risk Decisioning at Affirm. Co-founder Max Bittker formerly led Risk Operations at Affirm (per firm website).
How does SentiLink source proprietary data?
SentiLink uses licensed and proprietary data combined with manual case review from its Risk Operations team. It was the first organization to use and offer eCBSV, a government-backed identity verification service (per firm website).
Is SentiLink structured as a family office or a venture-backed company?
SentiLink is a venture-backed private company, not a family office. Its website lists no disclosed investors and it operates as a standalone technology firm serving financial institutions.
Does SentiLink participate in fund commitments or only direct deals?
SentiLink does not manage external capital or make investments. It sells fraud detection software and services directly to financial institutions and fintechs.
What investment stages does SentiLink typically target?
SentiLink targets the application stage for deposit accounts, credit cards, lending, and buy-now-pay-later products. It does not invest in companies but serves as a fraud prevention provider.
Which sectors does SentiLink explicitly avoid?
SentiLink does not disclose sectors it avoids. Its focus is exclusively on identity fraud and risk solutions for financial services (per firm website).
How is SentiLink related to Affirm?
SentiLink was founded by two early Affirm employees, Naftali Harris and Max Bittker. Their experience at Affirm solving fraud led to the founding of SentiLink in 2017 (per firm website).
Where does the underlying wealth come from?
SentiLink is a venture-backed private company; its revenue comes from software subscriptions and services to financial institutions. No family wealth is involved (per firm website).
Does SentiLink maintain philanthropic structures, and how are they separated?
SentiLink does not disclose any philanthropic foundations or charitable vehicles.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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