Y Combinator

Y Combinator is a startup accelerator based in Mountain View, California, founded in 2005. It has pioneered a new funding model for early-stage startups by investing a modest amount of capital, typically around $150,000, in a large number of companies twice a year. Over a three-month program, Y Combinator collaborates closely with these startups to prepare them for investor pitches and enhance their business strategies. Each funding cycle concludes with Demo Day, where startups present to an exclusive audience of investors. Y Combinator focuses on various sectors, including business software, education, healthcare, and financial technology, among others. In addition to initial funding, it offers ongoing support through its extensive alumni network. Since its inception, Y Combinator has funded over 630 startups, contributing significantly to the entrepreneurial ecosystem in Silicon Valley and beyond.

Gustaf Alstromer

Group Partner

Matt Bogrand

Associate, YC Continuity Fund

Timothy Brady

Partner

Craig R. Cannon

Director of Marketing

Adora Cheung

Partner

Nic Dardenne

Principal

Aaron Epstein

Group Partner

Brad Flora

Group Partner

Jared Friedman

Managing Director, Software and Group Partner

Aaron Harris

Partner

Carolynn Levy

Partner

Bradford (Brad) Lightcap

Associate, YC Continuity

Kat Manalac

Managing Partner

Eric Migicovsky

Partner

Kirsty Nathoo

Partner

Verena Prescher

Director of Finance

Geoff Ralston

president

Ali Rowghani

Managing Partner

Arnav Sahu

Principal

Michael Seibel

Managing Director

Harj Taggar

Partner

Past deals in Fraud Detection

Riot

Series A in 2023
Riot develops of a security platform designed for fighting phishing attempts. Riot's security platform runs fake phishing campaigns on employees and secures products and internal tools by two-factor authentications, enabling companies to educating their employees about security breaches.

Darrow

Series A in 2021
Darrow helps legal professionals discover violations and extract legal claims from a vast array of data. The company is on a mission to promote justice by uncovering the legal implications of real-world events. It specializes in the fields of data science, information technology, and computer software.

MarqVision

Seed Round in 2021
MarqVision is a cutting-edge brand protection platform that allows companies to automatically detect and remove counterfeits sold online.

PlusIdentity

Pre Seed Round in 2021
Digital identity management & verification

Protego Solutions

Pre Seed Round in 2021
Protego Solutions helps LatAm companies recover lost revenue. It automates the chargeback process, a process that currently requires quite a bit of manual labor.

inVOID

Seed Round in 2021
InVOID has one of the most robust systems to read and validate KYC documents in the Indian market. Our AI driven platform is device agnostic, vernacular, flexible and is extremely easy to integrate. We have a market leading National ID card OCR which works on all types and formats of National ID cards. Our core focus is to provide a winning customer experience for the everyday Indian user without compromising on KYC & Security

Anomaly Innovations

Seed Round in 2021
Anomaly Innovations is a software company focused on finding elegant solutions to common problems. Their main product is Cadmus, which is a real-time service that manages your stream (Twitter, FriendFeed and RSS) by displaying the most relevant content since the last time you checked in.

Berbix

Series A in 2020
Berbix Inc. is a technology company that specializes in providing a photo identity verification and fraud deterrence solution through a software-as-a-service (SaaS) platform. Founded in 2018, Berbix offers a comprehensive solution for collecting and validating photo IDs, including driver licenses and passports. Their platform enables instant ID checks, age verification, and enhancements for Know Your Customer (KYC) processes, while also addressing chargebacks and marketplace fraud. With features designed for seamless integration and customization, Berbix allows businesses to select their preferred verification methods and securely access user data, which helps in reducing low-intent or fraudulent sign-ups. The company, which is backed by prominent investors, was established by former leaders from Trust & Safety at Airbnb and operates from its headquarters in Sacramento, California.

Heron Data

Seed Round in 2020
We are a software company that categorises and labels bank transaction data. If you think deciphering a transaction on your bank statement is hard for you, it’s way harder for your lender, personal finance manager, or neobank, so we offer an easy service to solve this problem.

Veriff

Convertible Note in 2020
Veriff OÜ is an online identity verification company based in Tallinn, Estonia, founded in 2015. The company offers a highly automated identity verification platform that helps businesses protect themselves and their customers from online identity fraud. By combining machine learning technology and expert manual checks, Veriff provides secure authentication services that facilitate the verification of various identity documents, such as drivers' licenses and passports. This approach enables commercial sectors to enhance fraud prevention and comply with regulatory requirements related to customer identity verification. Veriff’s platform aims to create trust between companies and their customers by ensuring reliable identity verification processes.

Datafold

Pre Seed Round in 2020
Datafold Inc. is a company that specializes in quality assurance and monitoring solutions for analytical data. Established in 2020 and located in San Francisco, California, Datafold provides tools that automate data quality management, allowing organizations to derive greater value from their analytical data. Its offerings include the automatic comparison of tables, validation of ETL code changes, and the facilitation of data transfers. By streamlining data engineering workflows and simplifying data quality assurance processes, Datafold enhances the efficiency and effectiveness of data management for its clients.

Darmiyan

Seed Round in 2020
Darmiyan, Inc. develops a commercial diagnostic software platform for the early detection, monitoring, and stratification of Alzheimer’s disease and other neurodegenerative. It offers BrainSee, a Software as a Service (SaaS) platform that analyzes the scans and provides detailed brain maps with quantification of neurodegeneration in each voxel, as well as a summary score that reflects the person’s brain health and the likelihood of future cognitive decline. The company’s BrainSee is a virtual microscope of the human brain that takes standard clinical brain MRI and basic cognitive tests and generates brain maps and scores that indicate pathology at the earliest stages of the disease when treatments are feasible. The company was founded in 2014 and is based in San Francisco, California.

Candid Health

Seed Round in 2020
Candid Health is a platform that uses AI for automated medical billing. They undergo regular HIPAA audits by industry-leading security experts to protect the client's patients’ security and privacy. And uses AI to learn insurance submission rules in real-time, so they never make the same mistake twice.

Riot

Pre Seed Round in 2020
Riot develops of a security platform designed for fighting phishing attempts. Riot's security platform runs fake phishing campaigns on employees and secures products and internal tools by two-factor authentications, enabling companies to educating their employees about security breaches.

Feroot, Inc.

Venture Round in 2020
Feroot, Inc. develops intrusion and threat detection platform. It offers Client-facing attack surface monitoring, real time notifications, security access analysis, keystroke sniffing, asset discovery; Alerts and notifications, integrations, data skimming and unauthorized transfer, scripts; Forensics, caching and storing, script difference, loading chain; and Custom scenarios. The company was founded in 2017 and is based in Toronto, Canada.

Preclusio

Pre Seed Round in 2019
Preclusio develops software that helps companies comply with privacy regulations like GDPR and the California Consumer Privacy Act. It aims to help companies protect their customers’ personal data.

Berbix

Seed Round in 2019
Berbix Inc. is a technology company that specializes in providing a photo identity verification and fraud deterrence solution through a software-as-a-service (SaaS) platform. Founded in 2018, Berbix offers a comprehensive solution for collecting and validating photo IDs, including driver licenses and passports. Their platform enables instant ID checks, age verification, and enhancements for Know Your Customer (KYC) processes, while also addressing chargebacks and marketplace fraud. With features designed for seamless integration and customization, Berbix allows businesses to select their preferred verification methods and securely access user data, which helps in reducing low-intent or fraudulent sign-ups. The company, which is backed by prominent investors, was established by former leaders from Trust & Safety at Airbnb and operates from its headquarters in Sacramento, California.

Dyneti Technologies

Pre Seed Round in 2019
Dyneti Technologies, Inc. is a United States-based company that specializes in developing DyScan, a credit card scanning software development kit. This innovative technology enables mobile applications to prevent fraud and facilitate payment processing by allowing users to capture an image of their credit card. The service is enhanced by deep learning capabilities and is compatible with various card formats. Since its launch, Dyneti has successfully secured contracts with notable companies such as Rappi and Gametime, demonstrating its growing presence in the payment processing sector.

Truora

Seed Round in 2019
Truora, Inc. operates an online platform specializing in background checks and identity theft detection. Founded in 2018 and headquartered in San Francisco, California, with additional offices in Colombia, Mexico, and Brazil, the company utilizes advanced technologies such as optical character recognition (OCR) for digital onboarding, real-time face recognition for user validation, and identity management to streamline the Know Your Customer (KYC) process. Truora's platform can handle over 10,000 checks per hour, offering fast and innovative solutions tailored to the needs of various clients, including national and international retailers, banks, human resource firms, and marketplaces. By leveraging its technical and analytical expertise, Truora ensures a high-quality service experience for its clients' risk management and digital teams.

GeoPredict

Seed Round in 2019
Provides critical solution that enables better exploration decisions, improves the odds of finding viable deposits, and avoid wastefulness. They are solving the problem for decision makers of the explorationindutry. Whenever miners are faced with the decision of proceeding with the acquisition of a deposit, or further development of a deposit, they must evaluate risk and evaluate the potential value of the deposit for the company. To do so, they currently have to rely on the intuitions of geologists, which is often very inaccurate from the quantitative perspective. They are developing an alternate solution: via machine learning.

HelloVerify

Series A in 2019
With increasing fraud rates, the need for a credible background check system is more important than ever. Unlike other background check solutions that are manual, expensive and require a ton of documentation, HelloVerify creates a seamless experience through its technology platform that is cost effective and provides results instantly from trusted verification sources. It not only automates data collection and matching but streamlines the entire process from order requests, progress status to final report delivery. HelloVerify helps prevent fraud by finding facts about individuals. The online service acts as a means of authenticating and objectively verifying an individual’s identity, court case status, educational check, credit score and employment history - thereby enabling commercial transactions and hiring decisions to take place between parties. Whether you are a corporate or a startup looking to hire new employees or a homeowner seeking to verify your driver's driving license or a landlord wanting to ascertain your tenant’s payment ability - we provide a wide range of checks at affordable rates and quick turnaround time.

Castle

Series A in 2019
Castle provides advanced fraud detection and prevention solutions tailored for online businesses of all sizes. By offering technology that was once exclusive to banks and large financial institutions, Castle enables various customer-facing applications—including e-commerce platforms, mobile apps, and cryptocurrency services—to safeguard user accounts against unauthorized access. The company's APIs facilitate account hijack protection by monitoring user behavior through device fingerprinting, keystroke analysis, browsing history, and numerous other indicators. In the event of suspicious activity, both administrators and account owners receive immediate alerts, empowering them to respond swiftly and effectively to potential threats.

D-ID

Convertible Note in 2018
D-ID is a technology company founded in 2016 and based in Palo Alto, California, with an additional office in Tel Aviv, Israel. The company specializes in face recognition technologies, offering solutions that enhance identity theft protection and ensure compliance with regulations by de-identifying biometric data. D-ID's innovative software produces images and videos that remain recognizable to human observers while being unidentifiable to face recognition algorithms. This technology is designed for use by Fortune 500 companies, security agencies, and government institutions, helping them safeguard biometric databases and manage sensitive facial data effectively.

Berbix

Pre Seed Round in 2018
Berbix Inc. is a technology company that specializes in providing a photo identity verification and fraud deterrence solution through a software-as-a-service (SaaS) platform. Founded in 2018, Berbix offers a comprehensive solution for collecting and validating photo IDs, including driver licenses and passports. Their platform enables instant ID checks, age verification, and enhancements for Know Your Customer (KYC) processes, while also addressing chargebacks and marketplace fraud. With features designed for seamless integration and customization, Berbix allows businesses to select their preferred verification methods and securely access user data, which helps in reducing low-intent or fraudulent sign-ups. The company, which is backed by prominent investors, was established by former leaders from Trust & Safety at Airbnb and operates from its headquarters in Sacramento, California.

Eva

Seed Round in 2018
Higia Technologies, founded in 2016 and based in Mexico City, has developed EVA, an accessible and non-invasive wearable device aimed at assessing breast cancer risk. The device features tactile sensors that map the surface of the breast and its surrounding areas, enabling women to monitor changes in breast temperature, size, and weight. Equipped with biosensors, EVA continuously collects and analyzes this information, providing users with a reliable tool for tracking their breast health.

EpiFluid

Seed Round in 2018
EpiFluid develops ways to detect the early stage of Alzheimer's disease using cfDNA testing.

D-ID

Seed Round in 2018
D-ID is a technology company founded in 2016 and based in Palo Alto, California, with an additional office in Tel Aviv, Israel. The company specializes in face recognition technologies, offering solutions that enhance identity theft protection and ensure compliance with regulations by de-identifying biometric data. D-ID's innovative software produces images and videos that remain recognizable to human observers while being unidentifiable to face recognition algorithms. This technology is designed for use by Fortune 500 companies, security agencies, and government institutions, helping them safeguard biometric databases and manage sensitive facial data effectively.

Veriff

Pre Seed Round in 2018
Veriff OÜ is an online identity verification company based in Tallinn, Estonia, founded in 2015. The company offers a highly automated identity verification platform that helps businesses protect themselves and their customers from online identity fraud. By combining machine learning technology and expert manual checks, Veriff provides secure authentication services that facilitate the verification of various identity documents, such as drivers' licenses and passports. This approach enables commercial sectors to enhance fraud prevention and comply with regulatory requirements related to customer identity verification. Veriff’s platform aims to create trust between companies and their customers by ensuring reliable identity verification processes.

HelloVerify

Seed Round in 2018
With increasing fraud rates, the need for a credible background check system is more important than ever. Unlike other background check solutions that are manual, expensive and require a ton of documentation, HelloVerify creates a seamless experience through its technology platform that is cost effective and provides results instantly from trusted verification sources. It not only automates data collection and matching but streamlines the entire process from order requests, progress status to final report delivery. HelloVerify helps prevent fraud by finding facts about individuals. The online service acts as a means of authenticating and objectively verifying an individual’s identity, court case status, educational check, credit score and employment history - thereby enabling commercial transactions and hiring decisions to take place between parties. Whether you are a corporate or a startup looking to hire new employees or a homeowner seeking to verify your driver's driving license or a landlord wanting to ascertain your tenant’s payment ability - we provide a wide range of checks at affordable rates and quick turnaround time.

Darmiyan

Pre Seed Round in 2017
Darmiyan, Inc. develops a commercial diagnostic software platform for the early detection, monitoring, and stratification of Alzheimer’s disease and other neurodegenerative. It offers BrainSee, a Software as a Service (SaaS) platform that analyzes the scans and provides detailed brain maps with quantification of neurodegeneration in each voxel, as well as a summary score that reflects the person’s brain health and the likelihood of future cognitive decline. The company’s BrainSee is a virtual microscope of the human brain that takes standard clinical brain MRI and basic cognitive tests and generates brain maps and scores that indicate pathology at the earliest stages of the disease when treatments are feasible. The company was founded in 2014 and is based in San Francisco, California.

Arylla

Seed Round in 2017
Arylla Inc. is a Canadian company specializing in nanotechnology-based invisible ink designed for fraud detection in luxury goods. Founded in 2015 and based in Winnipeg, Arylla's ink assists resellers in verifying the authenticity of high-value items such as leather goods, footwear, and ready-to-wear clothing. The company collaborates with luxury brands, applying its ink during production and facilitating a revenue-sharing model that enables these brands to monetize the resale of their products while combating counterfeit sales. Additionally, Arylla offers a tiered security platform for printing invisible labels that support food authentication and develops scanners for verifying fluorescent signatures.

Castle

Seed Round in 2016
Castle provides advanced fraud detection and prevention solutions tailored for online businesses of all sizes. By offering technology that was once exclusive to banks and large financial institutions, Castle enables various customer-facing applications—including e-commerce platforms, mobile apps, and cryptocurrency services—to safeguard user accounts against unauthorized access. The company's APIs facilitate account hijack protection by monitoring user behavior through device fingerprinting, keystroke analysis, browsing history, and numerous other indicators. In the event of suspicious activity, both administrators and account owners receive immediate alerts, empowering them to respond swiftly and effectively to potential threats.

Amberbox Gunshot Detection

Seed Round in 2016
AmberBox provides instant gunshot detection, automating emergency processes to significantly reduce response time and remove human error, saving lives and mitigating liability. AmberBox detectors utilise a patented gunshot detection algorithm to respond immediately following a firearm discharge. With tri-factor authentication (percussion, audio and infrared), detectors are able to instantly determine a firearm signature with a near-zero false alarm rate. Upon activation, detectors alert first responders through our reporting network, and can integrate with other security systems, such as cameras, access control systems and mass notification to initiate.

Metapacket

Seed Round in 2016
Metapacket is a network security firm that specializes in safeguarding IT infrastructure from malware and advanced persistent threats. Its innovative platform verifies the source of each network session, ensuring that only human-generated traffic is allowed, while whitelisting automated processes. This approach enables the detection and blocking of zero-day malware and other sophisticated threats without relying on traditional intelligence or signatures. The platform automatically generates clear and focused incident reports, enhancing clients' ability to respond to security incidents effectively. Metapacket's technology has the potential to prevent high-profile hacks, demonstrating its capability in providing robust protection against emerging cyber threats.

Castle

Seed Round in 2016
Castle provides advanced fraud detection and prevention solutions tailored for online businesses of all sizes. By offering technology that was once exclusive to banks and large financial institutions, Castle enables various customer-facing applications—including e-commerce platforms, mobile apps, and cryptocurrency services—to safeguard user accounts against unauthorized access. The company's APIs facilitate account hijack protection by monitoring user behavior through device fingerprinting, keystroke analysis, browsing history, and numerous other indicators. In the event of suspicious activity, both administrators and account owners receive immediate alerts, empowering them to respond swiftly and effectively to potential threats.

Traversal Networks

Seed Round in 2015
Traversal Networks develops a new form of Network Intrusion Detection System designed to catch unknown threats. The Lateral Threat Detector appliances are easily installed on your corporate network. These analyst-assisted sensors learn traffic patterns on each of your network segments and detect lateral exploitation, backdoors, bots, malware, and network reconnaissance. The Traversal Networks operate on four different platforms: learn, reputation, machine learning and search. Traversal Networks has developed heuristics using a corpus of live network data combined with expertise in botnet detection to help filter traffic. Additionally, Traversal Networks uses IP and DNS reputation across all its deployed devices to detect new threats. The Lateral Threat Detector appliances utilize reinforcement learning to continually enhance filtering performance on each network segment, and submit prefix-preserving anonymized data to our cloud making it available to be quickly searched in real time. The Traversal Cloud Analysis platform was designed to enable its security analysts to quickly pivot on anomalous traffic seen across its network and classify it as malicious or benign.

Cyberfend

Seed Round in 2015
Cyberfend offers a robust security solution to protect your web and mobile applications from sophisticated attacks and fraudulent activity. Cyberfend uses a new security paradigm – human cognitive science combined with advanced machine learning. The solution detects account takeover, payment fraud and stolen credentials, in real time with near zero false positives. Cyberfend's Cognitive Security Engine solves several challenging problems with zero false positives. Cyberfend's BotFender is the most comprehensive bot/automation detection service available in the market today.

Final

Seed Round in 2015
Final, Inc. is a fintech company based in Oakland, California, founded in 2014. It focuses on enhancing consumer protection against fraud and theft through its innovative credit card and mobile application. The service allows users to generate multiple credit card numbers, including disposable ones for single-use purchases, thus providing a secure way to engage with various merchants. Users gain insights into their transactions and spending habits while minimizing the risks associated with account breaches and card cancellations. Final aims to empower consumers by offering greater control over their financial interactions, effectively reducing the potential for financial fraud. The company has received venture backing and participated in the Y Combinator accelerator program in 2015.

Rescue Forensics

Seed Round in 2014
Rescue Ops is a digital forensic that archives massive quantities of data from classified advertisement websites specializing in commercial sex ads for law enforcement agencies to use in anti-trafficking investigations.

NextCaller

Seed Round in 2014
Next Caller, Inc. specializes in real-time call verification technology, focusing on phone fraud detection services. The company provides a caller identification platform that aids businesses and consumers in identifying unknown callers and detecting fraudulent activity. Its Advanced Caller ID feature flags various forms of call spoofing by delivering real-time caller data, including telephone numbers, names, addresses, emails, and social profiles, along with threat-level analysis. The Next Caller Fraud API is designed to recognize suspicious calls, such as those from masked numbers. Utilizing a proprietary algorithm known as VeriCall, the company analyzes carrier-level metadata and offers a real-time RESTful API for seamless integration with existing customer interaction applications. Additionally, Next Caller enables users to clean and enhance their databases while assisting in lead validation and prioritization. Founded in 2012, Next Caller is headquartered in New York City, with additional offices in San Francisco and Boston, serving various sectors including insurance, finance, hospitality, telecommunications, healthcare, and government.

Framed Data

Seed Round in 2014
Framed Data takes data from businesses and turns it into actionable insights and decisions. They train, optimize, and store productionized models in their cloud and provide predictions through an API, eliminating infrastructure overhead. They provide dashboards and scenario analysis tools that tell you which company levers are driving metrics you care about.

Sift

Series A in 2013
Sift is a technology company specializing in fraud detection and prevention through its advanced machine learning platform. Founded in 2011 and based in San Francisco, California, Sift's software helps businesses monitor their online traffic in real-time, providing instant alerts for fraudulent activities. The platform enables clients to send various events to receive fraud scores, utilizing a JavaScript snippet to capture on-page activities and a REST API for reporting transactions. In addition to its fraud prevention services, Sift operates as an online publisher, managing a portfolio of business communities and providing website solutions to a range of organizations, including accounting firms in the UK. With a commitment to digital trust and safety, Sift supports companies in unlocking revenue while mitigating risks associated with fraud.

Credictive

Seed Round in 2012
Credictive provides attribution metatags for online content.

Sift

Seed Round in 2011
Sift is a technology company specializing in fraud detection and prevention through its advanced machine learning platform. Founded in 2011 and based in San Francisco, California, Sift's software helps businesses monitor their online traffic in real-time, providing instant alerts for fraudulent activities. The platform enables clients to send various events to receive fraud scores, utilizing a JavaScript snippet to capture on-page activities and a REST API for reporting transactions. In addition to its fraud prevention services, Sift operates as an online publisher, managing a portfolio of business communities and providing website solutions to a range of organizations, including accounting firms in the UK. With a commitment to digital trust and safety, Sift supports companies in unlocking revenue while mitigating risks associated with fraud.

ClickFacts

Seed Round in 2005
ClickFacts is a malware software solutions company that serves buyers and sellers of online media. Founded in 2005 by Mikhail Ledvich, Mikhail Gurevich, and Greg Gurevich, the company initially received funding from YCombinator and is currently based in San Francisco, California. ClickFacts offers an automated plug-and-play malware discovery solution that tests online advertisements and web pages to prevent the distribution of malware, which can pose risks such as identity theft. Additionally, its moderation software ensures that websites hosting advertisements are free from inappropriate content. The company's Ad Buddy product provides advertisers with real-time monitoring and a comprehensive history of ad placements, helping to maintain brand safety in the digital landscape.