[ { "id": 750, "name": "Smyte", "slug": "smyte", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://smyte.com", "all_locations": "San Francisco, CA, USA", "long_description": "Smyte stops spam, scams, harassment and credit card fraud for marketplaces and social networks. We automatically classify your website and mobile app's event data and stop bad actors at scale.", "one_liner": "Smyte stops bad actors on social networks and marketplaces.", "team_size": 11, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1416218728, "tags": [ "Security", "Fraud Detection" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2015", "status": "Acquired", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/smyte", "api": "https://yc-oss.github.io/api/batches/winter-2015/smyte.json" }, { "id": 1032, "name": "Castle", "slug": "castle-2", "former_names": [ "Castle.io", "Castle", "Castle Intelligence" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/8d7fdbafd7f8ab52a136ccd6f568c251351c96b8.png", "website": "https://castle.io", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Instantly stop automated and human-originated account takeovers, fake accounts, and any behavior that violates your platform policies.", "one_liner": "Block bots & bad behavior", "team_size": 20, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1447566615, "tags": [ "Developer Tools", "SaaS", "Security", "Fraud Detection" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2016", "status": "Active", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/castle-2", "api": "https://yc-oss.github.io/api/batches/winter-2016/castle-2.json" }, { "id": 1917, "name": "Inscribe", "slug": "inscribe", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/56ca6c4bee93b67aa430b76fd900b6de1e467c6a.png", "website": "https://www.inscribe.ai/", "all_locations": "San Francisco, CA, USA", "long_description": "Inscribe is AI-powered document fraud detection software for banks, credit unions, and lenders. It detects forged, fabricated, and AI-generated financial documents (including deepfake bank statements, manipulated pay stubs, and synthetic tax forms) in seconds, giving risk teams the clarity they need to stop fraud without slowing approvals.\r\n\r\nInscribe created the document fraud detection category and has been purpose-built for financial institutions since 2017. Our agentic AI is trained on millions of real-world applications and strengthened by in-house data scientists and fraud experts. According to Inscribe's 2026 State of Document Fraud Report, 1 in 16 documents show signs of fraud — with AI-generated document fraud growing 5x from April to December 2025.\r\n\r\nCustomers include BCU ($5.6M in prevented fraud losses), Logix Federal Credit Union ($3M in losses prevented in 8 months), and Ramp (30-minute reduction in application processing). Inscribe is SOC 2 Type II and ISO 27001 certified, and is backed by Threshold Ventures, Uncork Capital, Y Combinator, Crosslink Capital, and Foundry.", "one_liner": "AI Document Fraud Detection for Banks, Credit Unions & Lenders", "team_size": 35, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1524711773, "tags": [ "Artificial Intelligence", "Fintech", "Fraud Detection" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2018", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/inscribe", "api": "https://yc-oss.github.io/api/batches/summer-2018/inscribe.json" }, { "id": 23796, "name": "Slope", "slug": "slope", "former_names": [ "AirDesk" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/bb362ee6e3bfce450e6a8196b555db1534feef1b.png", "website": "http://www.slopepay.com", "all_locations": "San Francisco, CA, USA", "long_description": "Accept and reconcile B2B payments seamlessly.", "one_liner": "The B2B Payments Platform ", "team_size": 16, "industry": "Fintech", "subindustry": "Fintech -> Payments", "launched_at": 1625009192, "tags": [ "Artificial Intelligence", "Fintech", "Machine Learning", "Payments", "Fraud Detection" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2021", "status": "Active", "industries": [ "Fintech", "Payments" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/slope", "api": "https://yc-oss.github.io/api/batches/summer-2021/slope.json" }, { "id": 26749, "name": "Ballerine", "slug": "ballerine", "former_names": [ "Whis" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/40c2e4d4f16e7f43d9fe9f060296b72b7d16de22.png", "website": "http://www.ballerine.com", "all_locations": "", "long_description": "Ballerine is an AI-native risk intelligence platform built for financial institutions, acquirers, and payment providers that need to underwrite and monitor merchants at scale in real time.\r\n\r\nInstead of relying on fragmented point solutions, Ballerine unifies data from business registries, transaction patterns, sanctions lists, and web intelligence into one composable infrastructure. \r\n\r\nIts AI Agents continuously analyze these signals to deliver dynamic and explainable risk assessments across the merchant lifecycle.\r\nWith a modular architecture, teams can automate underwriting, detect emerging risks, and monitor merchant behavior while aligning to their own policies and compliance frameworks.\r\n\r\nUnlike traditional systems with static models, Ballerine’s AI Agents learn and adapt from live data, uncovering changes in merchant behavior that indicate fraud, laundering, or non-compliance.\r\n\r\nAlready deployed across multiple regions, Ballerine has enabled acquirers and fintechs to accelerate underwriting decisions, reduce manual reviews, and cut false positives, redefining how modern institutions manage merchant risk.\r\n", "one_liner": "Agentic Intelligence Layer for Merchant Risk Decisions", "team_size": 16, "industry": "Fintech", "subindustry": "Fintech", "launched_at": 1659913917, "tags": [ "Compliance", "Fraud Detection" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "Fintech" ], "regions": [ "Unspecified" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/ballerine", "api": "https://yc-oss.github.io/api/batches/summer-2022/ballerine.json" }, { "id": 26776, "name": "Overwatch", "slug": "overwatch", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/1def1e618878c538c08d4635fb23a133ed14d476.png", "website": "http://www.overwatchdata.ai", "all_locations": "New York, NY, USA", "long_description": "Overwatch Data offers real-time AI agents to scale fraud, cyber, and security teams. Our agents automate the threat intelligence and brand protection workflow, while also conducting risk reviews at scale to detect fraud and financial crime.", "one_liner": "Enterprise software for enterprise risk and cyber fraud intelligence", "team_size": 14, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1657829137, "tags": [ "Artificial Intelligence", "Cybersecurity", "Fraud Prevention", "Fraud Detection" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/overwatch", "api": "https://yc-oss.github.io/api/batches/summer-2022/overwatch.json" }, { "id": 27952, "name": "Finic", "slug": "finic", "former_names": [ "Triton", "Buff", "Sidekick", "Psychic", "Dealwise" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/06180819ad31c1d2ee1b4b62d506fd5e7655aec4.png", "website": "https://www.finic.ai", "all_locations": "San Francisco, CA, USA", "long_description": "Finic helps fraud teams catch organized fraud earlier, act on it faster, and turn discoveries into lasting defenses. Our AI agent analyzes structured and unstructured data across your systems to proactively surface the fraud that rules and scoring models miss.", "one_liner": "The AI fraud hunter", "team_size": 4, "industry": "Fintech", "subindustry": "Fintech", "launched_at": 1677272534, "tags": [ "Compliance", "Enterprise", "Automation", "Fraud Detection", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "Fintech" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/finic", "api": "https://yc-oss.github.io/api/batches/winter-2023/finic.json" }, { "id": 28077, "name": "Corgi Labs", "slug": "corgi-labs", "former_names": [ "CorgiAI" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/48ab8ae360dddc3659ad06077db5d3349b75b91f.png", "website": "https://www.corgilabs.ai", "all_locations": "San Francisco, CA, USA", "long_description": "End-to-end suite of fraud detection and prevention solutions, including an analytics product to monitor and understand dispute + fraud metrics, an AI product which highlights transactions for merchants to follow up on, and an AI solution to recommend rules that can be implemented in payment provider platforms (Stripe, Shopify, Adyen) to proactively reduce dispute + fraud rates.", "one_liner": "AI to increase payment acceptance and reduce fraud for businesses", "team_size": 3, "industry": "Fintech", "subindustry": "Fintech -> Payments", "launched_at": 1677769779, "tags": [ "Artificial Intelligence", "Payments", "Analytics", "E-commerce", "Fraud Detection" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "Fintech", "Payments" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": true, "app_answers": true, "question_answers": false, "url": "https://www.ycombinator.com/companies/corgi-labs", "api": "https://yc-oss.github.io/api/batches/winter-2023/corgi-labs.json" }, { "id": 29533, "name": "Indemni", "slug": "indemni", "former_names": [ "Alacrity" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/a4f88ce8a06e4b29451c4cd523deb4f547635bed.png", "website": "http://www.indemni.com", "all_locations": "San Francisco, CA, USA", "long_description": "We are building a safer supply chain. Cargo Theft has been increasing yearly, and the supply chain industry is urgently looking for ways to solve this. Using experience fighting fraud at the largest delivery marketplaces and logistics tech companies, we are building solutions to stop Cargo Theft and improve profit margins and revenue for warehouses and freight brokers.", "one_liner": "Cargo Theft and Fraud Prevention Platform", "team_size": 7, "industry": "B2B", "subindustry": "B2B -> Supply Chain and Logistics", "launched_at": 1708029636, "tags": [ "Identity", "Logistics", "Supply Chain", "Fraud Prevention", "Fraud Detection" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Supply Chain and Logistics" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/indemni", "api": "https://yc-oss.github.io/api/batches/winter-2024/indemni.json" } ]