Y Combinator

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.

Vanta is security-in-a-box for technology companies, covering everything from laptops to infrastructure, and using a suite of simple, effective, and easy-to-deploy tools.

SafeBase, Inc. is a San Francisco-based company that specializes in cloud-based security software designed to assist businesses in establishing effective security programs. Founded in 2020, SafeBase offers tools that streamline the security assessment process, enabling B2B SaaS companies to expedite enterprise deals. The primary product, SafeBase Inspected, provides a badge for websites that links to a customized security status page, enhancing customer trust and credibility. Additionally, the software includes features such as custom security checklists, continuous monitoring of security systems, and the ability to configure security policies, all aimed at giving sales teams a competitive advantage in presenting their security measures.

Promise Network Inc. is a technology company that has developed an application platform aimed at providing holistic support to individuals involved in the criminal justice system. Founded in 2017 and headquartered in Oakland, California, Promise offers a range of services designed to reduce recidivism and foster safer communities. The platform includes intake and assessment tools for evaluating risks and needs, ongoing support for communication and service coordination, and supervision features that ensure transparency and accountability. By working with county governments, Promise provides a cost-effective alternative to incarceration for arrestees who cannot afford bail. The tailored plans offered to participants encompass court-mandated conditions and connections to essential services such as drug treatment, housing, mental health support, and job training, ultimately helping individuals achieve their goals and improve long-term outcomes.

Salt Security, Inc. is a cybersecurity company based in Palo Alto, California, specializing in API security. Founded in 2016, the company offers a platform designed to prevent zero-day API breaches by utilizing machine learning and artificial intelligence. This platform can be deployed quickly, learning the specific behavior of a company’s APIs without the need for configuration or customization. It automatically and continuously identifies potential threats, enabling clients to block API attacks effectively. The company aims to protect the essential APIs that underpin modern applications, helping organizations safeguard their digital assets against emerging cyber threats. Salt Security was previously known as SECful, Inc. before rebranding in June 2018.

Munily, a proptech software, Is redefining security and administration in residential communities by centralizing all communications.

Passwordless authentication system employing a mobile app and proprietary cryptographic protocol. Keyri enables registration and login via QR code, eliminating all manual inputs. The protocol eliminates passwords and their attendant vulnerabilities, including phishing, password stuffing, man-in-the-middle attacks, and malware-based attacks.

Salt Security, Inc. is a cybersecurity company based in Palo Alto, California, specializing in API security. Founded in 2016, the company offers a platform designed to prevent zero-day API breaches by utilizing machine learning and artificial intelligence. This platform can be deployed quickly, learning the specific behavior of a company’s APIs without the need for configuration or customization. It automatically and continuously identifies potential threats, enabling clients to block API attacks effectively. The company aims to protect the essential APIs that underpin modern applications, helping organizations safeguard their digital assets against emerging cyber threats. Salt Security was previously known as SECful, Inc. before rebranding in June 2018.

Vanta is security-in-a-box for technology companies, covering everything from laptops to infrastructure, and using a suite of simple, effective, and easy-to-deploy tools.

RoundRobin's mission is to give people back control of their personal information. Over 93% of American's identities are readily accessible on the web. We help individuals and enterprises who are put at risk when their information is made public. Our primary product is currently in stealth-mode, running betas with high net worth individuals, celebrities, and various enterprise clients.

Promise Network Inc. is a technology company that has developed an application platform aimed at providing holistic support to individuals involved in the criminal justice system. Founded in 2017 and headquartered in Oakland, California, Promise offers a range of services designed to reduce recidivism and foster safer communities. The platform includes intake and assessment tools for evaluating risks and needs, ongoing support for communication and service coordination, and supervision features that ensure transparency and accountability. By working with county governments, Promise provides a cost-effective alternative to incarceration for arrestees who cannot afford bail. The tailored plans offered to participants encompass court-mandated conditions and connections to essential services such as drug treatment, housing, mental health support, and job training, ultimately helping individuals achieve their goals and improve long-term outcomes.

Salt Security, Inc. is a cybersecurity company based in Palo Alto, California, specializing in API security. Founded in 2016, the company offers a platform designed to prevent zero-day API breaches by utilizing machine learning and artificial intelligence. This platform can be deployed quickly, learning the specific behavior of a company’s APIs without the need for configuration or customization. It automatically and continuously identifies potential threats, enabling clients to block API attacks effectively. The company aims to protect the essential APIs that underpin modern applications, helping organizations safeguard their digital assets against emerging cyber threats. Salt Security was previously known as SECful, Inc. before rebranding in June 2018.

SafeBase, Inc. is a San Francisco-based company that specializes in cloud-based security software designed to assist businesses in establishing effective security programs. Founded in 2020, SafeBase offers tools that streamline the security assessment process, enabling B2B SaaS companies to expedite enterprise deals. The primary product, SafeBase Inspected, provides a badge for websites that links to a customized security status page, enhancing customer trust and credibility. Additionally, the software includes features such as custom security checklists, continuous monitoring of security systems, and the ability to configure security policies, all aimed at giving sales teams a competitive advantage in presenting their security measures.

Anjuna Security Inc. is a cybersecurity company based in Palo Alto, California, that specializes in a data-in-use platform designed to protect sensitive data during processing, transit, and at rest. Founded in 2017, Anjuna's technology enables organizations to secure their applications and key management systems in the cloud without requiring any changes to existing code. The platform creates a software perimeter around applications, delivering hardware-grade security that allows sensitive workloads to operate safely in public cloud environments. This approach eliminates the need for securing or patching the underlying infrastructure, as it protects applications even against threats from users with root or physical access. By seamlessly encrypting data end-to-end with secure enclaves, Anjuna empowers enterprises to run their most critical operations while maintaining robust security against insider threats.

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.

Sqreen SAS specializes in developing software-as-a-service (SaaS) solutions for application security. Founded in 2015 and headquartered in Saint Cloud, France, the company offers a platform that provides real-time protection and monitoring for web-based applications without requiring modifications to the source code. Sqreen's technology serves various systems, mobile devices, and cloud environments, enabling over 500 organizations to enhance their security posture. The platform integrates application security management needs into a single solution, allowing developers and security teams to maintain engineering efficiency while scaling their security measures. Sqreen was established by a team of security experts with prior experience in offensive security at Apple.

Flock Safety is a crime-fighting technology company that specializes in developing wireless security systems for neighborhoods, law enforcement, and municipalities. The company designs outdoor cameras that automatically record the license plates of vehicles passing through a monitored area, utilizing proprietary machine-learning algorithms to identify vehicle fingerprints. In addition to capturing images, Flock Safety provides valuable data to local police departments during criminal investigations and alerts them when stolen vehicles enter a neighborhood. This system not only aids law enforcement in solving crimes but also empowers residents to contribute to community safety by sharing relevant data. Founded in 2017, Flock Safety is headquartered in Atlanta, Georgia.

Paladin Cyber provides cyber protection as a service for Small Businesses. The company was founded in 2017 and is based in San Francisco, California.

Federacy Cypher, Inc. is a company that specializes in providing an online security platform tailored for startup businesses. Founded in 2018, it focuses on offering a bug bounty service, enabling startups to identify and address security vulnerabilities effectively. The company is headquartered in San Francisco, California, and aims to enhance the security posture of emerging companies by leveraging the expertise of security researchers.

Tall Poppy Security Inc., operating as Tall Poppy, is a San Francisco-based company founded in 2018 that specializes in security awareness training and compassionate care services for employees facing online threats. The company offers a comprehensive platform that combines proactive security training with threat monitoring and incident response, specifically designed to protect individuals from online harassment and abuse. Tall Poppy's services are particularly beneficial for high-profile or executive staff who are at greater risk, providing them with tailored support and resources. Additionally, the platform educates employees about relevant laws across various states to empower them in safeguarding their personal and professional lives.

Vanta is security-in-a-box for technology companies, covering everything from laptops to infrastructure, and using a suite of simple, effective, and easy-to-deploy tools.

Anjuna Security Inc. is a cybersecurity company based in Palo Alto, California, that specializes in a data-in-use platform designed to protect sensitive data during processing, transit, and at rest. Founded in 2017, Anjuna's technology enables organizations to secure their applications and key management systems in the cloud without requiring any changes to existing code. The platform creates a software perimeter around applications, delivering hardware-grade security that allows sensitive workloads to operate safely in public cloud environments. This approach eliminates the need for securing or patching the underlying infrastructure, as it protects applications even against threats from users with root or physical access. By seamlessly encrypting data end-to-end with secure enclaves, Anjuna empowers enterprises to run their most critical operations while maintaining robust security against insider threats.

Promise Network Inc. is a technology company that has developed an application platform aimed at providing holistic support to individuals involved in the criminal justice system. Founded in 2017 and headquartered in Oakland, California, Promise offers a range of services designed to reduce recidivism and foster safer communities. The platform includes intake and assessment tools for evaluating risks and needs, ongoing support for communication and service coordination, and supervision features that ensure transparency and accountability. By working with county governments, Promise provides a cost-effective alternative to incarceration for arrestees who cannot afford bail. The tailored plans offered to participants encompass court-mandated conditions and connections to essential services such as drug treatment, housing, mental health support, and job training, ultimately helping individuals achieve their goals and improve long-term outcomes.

Sqreen SAS specializes in developing software-as-a-service (SaaS) solutions for application security. Founded in 2015 and headquartered in Saint Cloud, France, the company offers a platform that provides real-time protection and monitoring for web-based applications without requiring modifications to the source code. Sqreen's technology serves various systems, mobile devices, and cloud environments, enabling over 500 organizations to enhance their security posture. The platform integrates application security management needs into a single solution, allowing developers and security teams to maintain engineering efficiency while scaling their security measures. Sqreen was established by a team of security experts with prior experience in offensive security at Apple.

Flock Safety is a crime-fighting technology company that specializes in developing wireless security systems for neighborhoods, law enforcement, and municipalities. The company designs outdoor cameras that automatically record the license plates of vehicles passing through a monitored area, utilizing proprietary machine-learning algorithms to identify vehicle fingerprints. In addition to capturing images, Flock Safety provides valuable data to local police departments during criminal investigations and alerts them when stolen vehicles enter a neighborhood. This system not only aids law enforcement in solving crimes but also empowers residents to contribute to community safety by sharing relevant data. Founded in 2017, Flock Safety is headquartered in Atlanta, Georgia.

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.

NetBeez, Inc. is a company that specializes in developing and marketing an enterprise network monitoring software solution. Founded in 2013 and based in Pittsburgh, Pennsylvania, NetBeez offers a real-time, distributed performance monitoring platform that focuses on detecting network and application problems before they impact users. The system operates through agent-based monitoring of LAN, WAN, and WiFi networks, providing insights from the user's perspective and measuring key performance indicators related to service quality. This solution is designed for various environments, including retail stores, physician offices, educational institutions, bank branches, and other locations. By enabling IT teams to quickly identify, troubleshoot, and resolve network issues, NetBeez helps organizations reduce downtime and associated costs while enhancing overall network performance.

Patchwork was founded by two security engineers with the goal of bringing automation and expert security processes to the wider software market.

Salt Security, Inc. is a cybersecurity company based in Palo Alto, California, specializing in API security. Founded in 2016, the company offers a platform designed to prevent zero-day API breaches by utilizing machine learning and artificial intelligence. This platform can be deployed quickly, learning the specific behavior of a company’s APIs without the need for configuration or customization. It automatically and continuously identifies potential threats, enabling clients to block API attacks effectively. The company aims to protect the essential APIs that underpin modern applications, helping organizations safeguard their digital assets against emerging cyber threats. Salt Security was previously known as SECful, Inc. before rebranding in June 2018.

Stealth Worker specializes in Cyber Security. Rather than hiring for full-time employment roles, their Stealth Workers are contractors. You can hire them for projects or long term roles, from as little as 5 hours to as many as 40 hours per week.

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 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.

Protocol Labs is a research and development organization focused on creating innovative network protocols and software systems that address significant challenges in technology. By employing an open-source approach, it aims to develop solutions that enhance user experience and leverage new technological breakthroughs. Additionally, Protocol Labs operates an innovation network that connects startups with investors, accelerators, and various organizations. This network facilitates collaboration among entrepreneurs, allowing them to share knowledge, resources, and expertise, thereby accelerating their research and development processes across multiple technological domains. Through these efforts, Protocol Labs seeks to foster advancements that can impact a wide range of industries.

Bannerman Security has transformed the private security industry by establishing an innovative marketplace that connects clients with highly qualified security professionals. The company provides a platform that allows residential, office, retail, and facility managers to easily find, hire, and manage security services online. Bannerman screens all applicants to ensure that every security guard meets the necessary qualifications and possesses relevant certifications and experience, thereby guaranteeing a high standard of safety and quality for its clients. The platform also features a web dashboard for viewing and editing guard schedules, as well as a mobile application for added convenience, making the process of securing physical security efficient and straightforward.

Search your intranet from one box" We built a Flickr to Facebook photo migration tool as a overnight hack, and moved half a million photos. We were covered in ZDNet.

Nouvou offers mobile file sharing and encryption solutions for enterprises. The company was founded in 2011 and is based in Santa Clara, California.

CryptoSeal provides Virtual Private Networks (VPNs) as a service.

Enernetics is the web's largest digital trustmark provider.