Top San Diego, CA Cybersecurity Startups (1,036)

Since 2015, Immuta has given Fortune 500 companies and government agencies around the world the power to put their data to work – faster and more safely than ever before. Our platform delivers data security, governance, and continuous monitoring across complex data ecosystems – de-risking sensitive data at enterprise scale. From BI and analytics, to data marketplaces, AI, and whatever...

At UncommonX, we believe organizations need more than alerts —they need context, prioritization, and insight. That’s why we’re rethinking cybersecurity from the ground up. Our AI-powered Exposure Management platform delivers complete visibility across networks—on-prem, cloud, OT, IoT, and beyond—without deploying agents or disrupting operations. We call it hyperconverged security: a smarter, unified approach that combines asset discovery, vulnerability management, threat intelligence,...

Closinglock is the trusted platform for securing and streamlining real estate transactions. Working with title companies and law firms nationwide, it protects what truly matters: their clients, their funds, and their hard-earned reputation. Closinglock brings the entire workflow into one secure space—from ID verification and wire instructions to payments and eSigning. This means users can close deals faster, with total...

Invoice Home is a billing and invoicing service for small businesses and freelancers seeking to grow their business or start a new one! We offer simplistic services and tools with over 100 customizable templates, where you can add your business logo and signature. We offer a desktop version for behind your screens while at home or in your office but...

We're building a next-generation cyber risk platform that empowers security and business leaders to make more informed decisions about their cybersecurity program. Our platform, Axio360, allows security teams to capture and quantify their cyber risks in dollar terms, which helps business leaders prioritize and plan cybersecurity initiatives and investments. Some of the largest energy, critical infrastructure, and financial services companies...

Hiro is a company that creates developer tools for Stacks, a network that enables apps and smart contracts for Bitcoin. As a core entity within the Stacks Ecosystem, Hiro works alongside various independent entities, developers, and community members to establish a user-owned internet on Bitcoin. Hiro provides developers with the tools to innovate and build on Bitcoin in ways previously...

FusionAuth builds software for developers needing to add authentication to their software products. It's a big problem - every application needs authentication, but building it yourself is a complex distraction. We distribute our free Community software through word-of-mouth reputation to software developers worldwide. We nurture and support the software development communities, taking their input to give "Devs" the features they...

LogicManager believes performance is a result of effective risk management. Our ERM software and top-rated customer experience help organizations manage surprises before they happen - ensuring a positive impact on the organization and community at large. But don’t just take our word for it; we're proud to be a certified Great Place to Work® every year since 2017!

CertifID helps to create a world without wire fraud. Started after our co-founder was hit by fraud – we’re the only company dedicated to fighting fraud for the real estate industry with an identity verification SaaS platform, insurance, and proven recovery services. CertifID helps safeguard billions of dollars every month from fraud and provides peace of mind with direct insurance...

Deepening the Science of Security Founded in 2012 by 3 expert hackers with no investment capital, Trail of Bits is the premier place for security experts to boldly advance security and address technology’s newest and most challenging risks. It has helped secure some of the world's most targeted organizations and devices. Our combination of novel research with practical solutions reduces the...

Nisos is the human risk management company specializing in unmasking threats before they escalate. We are a trusted advisor who operates as an extension of security, intelligence, legal, and human resource teams to protect their people and business. Our intelligence-led solutions help enterprises make critical decisions, manage human risk, and drive real world consequences for digital threats. For more information,...

Sonrai Security is a rapidly growing venture-funded Saas cloud security company with over a 300% increase in revenue-customer logos and a 67% growth in employees. It is named a 2021 Gartner Cool Vendor and has offices in New York and New Brunswick, Canada. It recently secured $50M Series C funding and is backed by Menlo Ventures, Polaris Partners, TenEleven Ventures,...

OVERVIEW Percival provides cutting edge engineering solutions with the expertise and understanding of tools, techniques, and technologies to solve our customers most complex challenges in combating today’s cyber threats. Percival is at the forefront of innovation in vulnerability analysis and research, system emulation, software engineering, reverse engineering, embedded development, operational technologies (critical infrastructure) and cybersecurity solutions. ABOUT US Percival is a Service Disabled...

While there are many security organizations that serve the Fortune 100, Antigen Security serves organizations of all shapes and sizes. This is because we know threats affect everyone, no matter how small or large the organization. At Antigen Security, we understand the connection our business has to individuals, communities, and the local economy. That’s why we’re committed to helping our clients...

Tenet3 was established in 2013 with a passion to make cyber resilience easy. We automate digital engineering model building for cyber risk assessment and mitigation. We specialize in cyber security economics. Specifically, we employ authoritative models to identify the strategies and tactics that lead to optimal security investments for our clients. Our automated metrics assess threat mitigation strategies, cyber security...

Concorde Technology Group is one of the UK’s leading Managed IT Services providers, specialising in Infrastructure Solutions, IT support, Cybersecurity, Communications and Cloud Solutions Established in 1985, we are committed to making IT work for our customers and offer technical excellence and reliability as standard. As a national company with a localised quality, we benefit from a loyal customer base...

Since 2003, Clark Schaefer Consulting has been providing superior accounting, control and technology/cybersecurity services to the business community. The Firm has an established reputation for delivering outstanding and customizes solutions for a reasonable cost. Integrity, quality, respect, and innovation are all values that we deliver to our clients, and are therefore traits found in our employees. Subsequently, as a Firm,...

Founded in 1998 and based in Orange County, California, I.T. Responsive began with a mission to help small and mid-sized businesses get a quantifiable return on their technology investments. Since then, we have grown to provide both small, mid-sized and enterprise level services with best-of-breed service solutions and project services. With practices in Managed Services, Cloud Services, Virtualization and Infrastructure,...

"For over 13 years, Ciegate Technologies has provided businesses in Miami, Florida, and beyond with a comprehensive range of IT solutions to optimize their operations. More than just an IT support company, Ciegate aligns technology needs with business goals by developing a robust IT strategy. Their expertise includes IT management, network setup, cloud services implementation, cybersecurity measures, phone systems integration,...

StrikeReady is committed to focusing on the most foundational element in cybersecurity – The People with a simple goal – Empower Defenders. The product brings together contextual awareness, automation, knowledge and collaboration to modernize security operations and integrates with all the leading endpoint, network and cloud and intelligence technologies.