Top California Cybersecurity Startups (100)

Harmonic Security lets your teams adopt AI tools safely by protecting sensitive data in real time with minimal effort. It gives you full control and stops leaks so your teams can innovate confidently. Recognized as an RSA Innovation Sandbox finalist in 2024, Harmonic Security redefines data protection for the GenAI era.

Rebel Space Technologies is a space and cybersecurity company developing autonomous threat recognition and response software for wireless communication networks. Our mission is to protect and optimize networks with intelligent systems, securing humanity's hyper-connected infrastructure from Earth to deep space.

Fortune 500 companies rely on XYPRO to secure their systems. Our diverse 700+ customer base includes the world’s leaders in finance, telecommunications, manufacturing, retail, and government. The XYGATE solution includes risk management, analytics, authentication, privileged privileged access management, auditing and compliance.

System Two Security automates detection engineering and threat hunting. Leveraging the latest advances in AI, System Two creates custom agents and models to simplify and accelerate handling emergent threats, managing detection lifecycles, and optimizing rules for detecting adversaries faster.

SpinOne by Spin Technology is a SaaS data security management platform designed to monitor, secure, and back up your G Suite, Microsoft 365 and Salesforce data, protect against ransomware, improve compliance, and reduce IT costs. SaaS Backup Backup your Google Workspace, Microsoft Office365, or Salesforce data. Restore any damaged assets in a matter of seconds. Risk Assessment and Access Management Streamline risk assessment and...

At Endor Labs, we’re building the modern Application Security platform for the AI-driven era of software development. Our mission is simple but bold: help every organization ship secure software fast with clarity on what matters, and the power to fix it quickly. Today’s AppSec teams are buried in noisy alerts and fragmented tools, while developers race to innovate using open source...

Release the Cracken. Defend what matters. Cracken is the first Red-AI Copilot built for real offense, not an ordinary CNAPP or endpoint security. We arm defenders with nation-state grade attack logic at machine speed, under full human command. Not black boxes. No fluff. Born on the hardest frontlines of cyber conflict -- Ukraine, US, EU -- Cracken is built by...

Galvanick helps companies secure their industrial operations and minimize cyber risk. Our platform collects telemetry from across our clients' industrial environments to analyze, correlate, and detect malicious behavior. Concerned about cyber threats to your industrial infrastructure and operations? Contact us at [email protected]

CUJO AI is the global leader of cutting-edge cybersecurity and network intelligence solutions that enable network operators globally to improve the digital life protection of their customers in and outside the home. By pioneering AI-powered cybersecurity and empowering a growing ecosystem of OEM partners, CUJO AI helps major ISPs around the world to protect their subscribers. Mobile and fixed network operators...

U.S. Venture Partners (USVP) is a leading Silicon valley-based venture capital firm, helping entrepreneurs build world-class companies since 1981. U.S. Venture Partners (USVP), is a venture capital investment firm headquartered in Menlo Park, California in the heart of Silicon Valley focusing on investments in an array of segments including enterprise software, cyber security, consumer, e-commerce, healthcare, and IT-enabled healthcare services. Since...

Industry’s first Real-time Attack Interception and Defense Platform built to deterministically detect and stop attackers navigating your infrastructure.

Identify company-owned devices with ease with Smallstep. Ensure that access to financial data, code repositories, PII, SaaS apps, and other sensitive resources is only possible from trusted, company-managed devices.

Data breaches in the cloud remain an unsolved problem because existing security controls are blind to the data they are attempting to protect. To overcome this data blindness, controls and access policies become overly complex with no added security benefit. Theom takes a new approach to cloud data security by taking inspiration from how the Secret Service protects high-value assets–the...

We believe cyber risk management has evolved from an IT problem into a business problem. Because of this shift, security executives must adapt how they communicate risk to the board. But since risk is hard to frame in the context of a business initiative, security executives need help putting risk into business terms that the board can use to make...

Organizations are shifting to an identity-first posture for cybersecurity with today’s distributed workforce and migration to the cloud. Attivo Networks, a SentinelOne company, provides Identity Threat Detection and Response (ITDR) and cyber deception solutions for protecting against identity compromise, privilege escalation, and lateral movement attacks. The platform efficiently prevents attacks across Active Directory, cloud environments, and devices through data cloaking,...

The Spec platform empowers businesses to secure their customer journeys, overtake bad actors, and reward every good customer with a trusted online experience. Spec collects rich user session data in real time, enabling continuous and secure threat monitoring without reliance on tamper-prone JavaScript tracking tags. When attacks are detected, workflows are automatically triggered to remediate the issue before the user...

We are looking for entrepreneurs! The Hive is a AI fund and co-creation studio that collaborates with entrepreneurs and corporations to create and launch AI based startups. We believe that applications that leverage the innovation in AI and data infrastructures are changing the world, our lives and every industry. The Hive's focus is on the enterprise and vertical industries including financial services,...

Inspired by a true passion for his craft, master carpenter Fernando Olea began a tradition of bringing his customers’ ideas to life in 1975. He began designing, engineering and producing furniture, cabinetry, display exhibits, and later, kiosks in his small, rented RV garage in Downey, California. And Olea was born. 45 years later, Olea Kiosks is at the forefront of self-service...

For organizations handling Protected Health Information (PHI), VMRacks assures HIPAA compliance through managed security and HIPAA cloud services. Prevent PHI risks that can lead to costly data breaches, fines, and rising compliance costs. VMRacks provides peace of mind for government, enterprise, and non-profit health care & IT organizations by: • Managing your HIPAA Compliance. Unlike infrastructure-only IT solutions, VM Racks employs a full-time...

Blockchain Labs is one of the leading providers of blockchain technology solutions. We have built and operated COOV, South Korea's national blockchain-based COVID-19 vaccine passport that serves more than 43 million users and processed over 30 million verifications per day - this is by far the biggest and the most successful blockchain service that people were able to use. Our...