Startup profile · funding coverage
SentiLink funding, valuation and investors
Synthetic identity fraud detection for banks and fintech originations.
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Funding, valuation & investors
Answer-first snapshotLatest funding
Series B
$70M · August 2021
Latest known valuation
Not publicly disclosed
Total disclosed equity funding
$70M
Excludes debt, grants, acquisitions, secondaries, and IPO proceeds.
Current status
private
series b · San Francisco, California
Overview
SentiLink detects synthetic identity fraud — fabricated identities combining real and fake PII used to open fraudulent accounts — for banks, credit unions, and fintech lenders. Founded by former Affirm risk executives, the San Francisco company provides API scores and identity attributes at account opening. Andreessen Horowitz led Series A in 2019; Craft Ventures led a $70M Series B in August 2021 with a16z doubling down. SentiLink reports adoption by nearly 100 financial institutions.
Why SentiLink is interesting
Ex-Affirm risk leaders built the category-defining synthetic-fraud API — nearly 100 FIs standardized on SentiLink after a16z-led Series A and Craft-led B.
Product & use cases
SentiLink's API returns synthetic fraud scores and identity insights at onboarding — flagging fabricated identities that pass traditional KYC checks by mixing real SSN fragments with fake personal data.
- Bank account opening fraud prevention
- Credit card and personal loan origination screening
- Fintech onboarding identity verification
- Synthetic identity portfolio monitoring
Key facts
- Series B (Aug 2021): $70M led by Craft Ventures; a16z re-upped — BusinessWire
- Series A (2019): led by a16z — a16z announcement
- Founded by ex-Affirm risk executives
- Adopted by nearly 100 financial institutions per company materials
Funding history (newest first)
Series B
2021-08 $70MSource: https://www.businesswire.com/news/home/20210817005000/en/
Series A
2019Source: https://a16z.com/announcement/doubling-down-on-sentilink/
Investors in our directory
Funds linked from SentiLink's profile — open a fund page for stage focus and related deal articles.
Competitive landscape
Edge: Purpose-built synthetic identity models from Affirm alumni who saw the attack vector scale firsthand — not generic fraud scores.
Synthetic identity is the fastest-growing fraud type in US financial services. SentiLink owns the niche API layer; Socure and incumbents bundle similar signals. Craft and a16z backing signals category leadership bet.
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Socure direct
Identity verification with synthetic fraud modules; broader KYC platform.
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LexisNexis Risk Solutions incumbent
Enterprise fraud and identity data incumbent.
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Ekata (Mastercard) direct
Identity verification API competitor.
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Sardine adjacent
Broader fraud + compliance stack including device intelligence.
Notable stories
- SentiLink founders saw synthetic identity explode at Affirm — built a dedicated API when generalist fraud vendors underweighted the attack type.
- a16z 'doubled down' at Series B per firm blog, rare explicit re-up language signaling conviction in the category.
Industries
FAQs about SentiLink
Practical answers founders, operators, and investors typically search for.
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