You asked about Fraud Prevention
26 people built something like it. 1 is gone.
That is 5% of the ones whose fate we could settle, against 23% across the whole register. 5 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2019-01-01 | YCTruora Reliable background checks & fraud prevention tools for Latin America. · truora.com | still up |
| 2018-01-01 | YCVeriff AI-powered identity verification solution for fraud prevention. · veriff.com | still up |
| 2022-06-01 | YCTwo Dots AI fraud prevention and underwriting agent · twodots.com | still up |
| 2022-06-01 | Enterprise software for enterprise risk and cyber fraud intelligence · overwatchdata.ai | still up |
| 2023-06-01 | YCDiligent AI agents for fintech risk and compliance operations · godiligent.ai | still up |
| 2024-01-01 | YCIndemni Cargo Theft and Fraud Prevention Platform · indemni.com | still up |
| 2021-06-01 | YCKeyri Secure fraud prevention and authentication platform for developers · keyri.com | acquired |
| 2015-01-01 | Cyberfend delivers robust, real-time web and mobile security by… · cyberfend.com | acquired |
| 2018-06-01 | YCInscribe AI Document Fraud Detection for Banks, Credit Unions & Lenders · inscribe.ai | still up |
| 2022-01-01 | Prevent Fraud and Onboard Users Faster · dojah.io | still up |
| 2016-01-01 | YCCastle Block bots & bad behavior · castle.io | still up |
| 2022-06-01 | Agentic Intelligence Layer for Merchant Risk Decisions · ballerine.com | still up |
| 2026-01-01 | YCDidit Infrastructure for identity and fraud. · didit.me | still up |
| 2021-06-01 | YCSlope The B2B Payments Platform · slopepay.com | still up |
| 2023-01-01 | YCVariance AI Agents for Fraud Review and Investigations · variance.com | still up |
| 2015-01-01 | YCFinal A credit card that drastically reduces payment fraud and gives… · getfinal.com | acquired |
| 2015-01-01 | YCSmyte Smyte stops bad actors on social networks and marketplaces. · smyte.com | acquired |
| 2015-06-01 | YCPlateJoy PlateJoy is building the technology to power disease prevention and… · platejoy.com | acquired |
| 2026-01-01 | YCMouseCat AI to fight financial crime · mousecat.ai | still up |
| 2025-06-01 | AI coworkers for fraud and compliance teams. · getsocratix.ai | still up |
| 2023-01-01 | YCFinic The AI fraud hunter · finic.ai | still up |
| 2023-01-01 | AI to increase payment acceptance and reduce fraud for businesses · corgilabs.ai | still up |
| 2019-01-01 | Reduce payment fraud · dyneti.com | still up |
| 2026-09-01 | AI Claims Investigator for Insurance · gethesperai.com | still up |
| 2016-01-01 | YCEnflux Motion capture clothing for injury prevention · getenflux.com | gone |
| 2024-01-01 | Personalized prevention using genetics and AI · haplotypelabs.com | still up |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.