Inscribe
Hiring
What they do:
AI Document Fraud Detection for Banks, Credit Unions & Lenders
Quick facts:
HQ: San Francisco, CA, United States
Top Fraud Detection Startups
This list has 12 startups and was last updated on Oct 15, 2026. 4 of them are hiring right now. Biggest hubs: San Francisco (7) and New York (3). Largest teams: Inscribe, Castle, and Slope.
12 startups
Castle
Hiring
What they do:
Block bots & bad behavior
Quick facts:
HQ: San Francisco, CA, United States
Slope
Hiring
What they do:
The B2B Payments Platform
Quick facts:
HQ: San Francisco, CA, United States
What they do:
Agentic Intelligence Layer for Merchant Risk Decisions
Quick facts:
What they do:
Enterprise software for enterprise risk and cyber fraud intelligence
Quick facts:
HQ: New York, NY, United States
Indemni
Hiring
What they do:
Cargo Theft and Fraud Prevention Platform
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI to fight financial crime
Quick facts:
HQ: New York, NY, United States
What they do:
Frontier AI to stop fraud, abuse, and financial crimes.
Quick facts:
HQ: San Francisco, CA, United States
What they do:
AI to increase payment acceptance and reduce fraud for businesses
Quick facts:
HQ: Singapore
What they do:
AI Claims Investigator for Insurance
Quick facts:
HQ: New York, NY, United States
What they do:
Catch wrong LLM answers before your customers do
Quick facts:
HQ: San Francisco, CA, United States
Smyte
Acquired
What they do:
Smyte stops bad actors on social networks and marketplaces.
Quick facts:
HQ: San Francisco, CA, United States
Questions and answers
How many startups are on this list?
There are 12 startups on this list, last updated on Oct 15, 2026.
Which of them are hiring?
4 of them are hiring right now, including Inscribe, Castle, and Slope.
Which of them have the largest teams?
By team size: Inscribe (35 employees), Castle (20 employees), and Slope (16 employees).
Where are they based?
The biggest hubs are San Francisco (7) and New York (3).