Cybersecurity Startups

Ohalo provides AI-driven data governance and classification software for managing unstructured data at enterprise scale. The platform helps organizations enforce compliance, manage risk, and extract intelligence from unstructured files across multi-cloud and hybrid environments.

2 investors

Oleria provides an access graph platform that unifies identity, access, activity logs, and data classification to help security teams investigate incidents and identify who accessed breached data, how they gained access, and what actions they performed. The platform serves enterprise security teams responding to data breaches and access control incidents.

2 investors

OLOID provides passwordless authentication and identity access management for frontline and deskless workers using shared devices, supporting login via biometrics, badges, NFC, and device-based verification. It serves industries including manufacturing, healthcare, retail, pharmaceuticals, and contact centers, integrating with existing HRIS, SSO, and physical access control systems.

2 investors

Olympix builds automated security tools for identifying vulnerabilities in smart contracts during development, enabling developers to detect and fix issues proactively before deployment or audit.

2 investors

Ondorse is an all-in-one compliance platform that enables customer onboarding, scanning, remediation, and ongoing monitoring with AI-powered features. It serves financial institutions and fintechs needing KYC/AML compliance management at scale.

2 investors

OneCLI is an open-source credential gateway that secures AI agents by injecting API keys at the network layer, preventing agents and LLMs from accessing credentials directly. It works across any agent framework and enforces policies at the proxy level for endpoint blocking, rate limiting, and approval workflows.

2 investors

Onehub provides a cloud-based document sharing platform that lets businesses upload, organize, and share files within secure Workspaces with permission controls, activity tracking, and branding options. It targets businesses across industries needing secure online document sharing and collaboration with clients and partners.

2 investors

OneTrust offers software for AI governance, data privacy, consent management, and regulatory compliance, helping organizations collect, govern, and use data with visibility and control. Its tools address frameworks such as GDPR, CCPA, the EU AI Act, ISO 27701, SOC 2, and numerous national data protection laws.

2 investors

Onit is a Decision-Based Exposure Management platform that uses AI agents to automatically triage, prioritize, assign ownership, and resolve security vulnerabilities across an organization's existing tools. It targets enterprise security teams looking to reduce vulnerability backlogs and remediation time without adding headcount.

2 investors

OpenRefactory provides automated application security (AppSec) tools that scan proprietary code and open source dependencies to identify and remediate vulnerabilities across the software supply chain. Its SAST and SCA-style solutions help engineering, OSPO, and OSS ingestion teams prioritize risky components and meet regulatory requirements such as the EU CRA and NIST SSDF.

2 investors

OpenTeams positions itself around AI, advocating that organizations should own their own intelligence. The available page content is a blog excerpt and does not describe specific products or services.

2 investors

OpenVector monitors video feeds to detect security events such as tailgating through building entrances and triggers automated responses like placing phone calls with attached clips. The product uses natural-language rules to configure physical security automations.

2 investors

Vantelis provides cybersecurity and operational technology data capture solutions for industrial operators managing legacy assets, offering real-time data compression, security tool cost optimization, and network segmentation without requiring network changes.

2 investors

Optiv is a cybersecurity company that provides managed security services, incident response, and consulting to help organizations detect and manage cyber threats. The company serves enterprise clients through a network of over 450 technology partners.

2 investors

Orasio develops computer vision technology that analyzes video streams in real-time to detect and extract actionable intelligence while maintaining compliance with European data protection standards. The platform operates on-device, on-server, or in the cloud and is designed for organizations requiring video surveillance analytics without replacing existing camera infrastructure.

2 investors

Orbis Protect is a security services company providing vacant property solutions, site security, and people protection services across the UK and Europe. Founded in 1981, it operates a network of over 900 employees and 25 offices to deliver rapid response and on-site security support for commercial, infrastructure, housing, and facilities management clients.

2 investors

Osavul develops Janus, a threat intelligence platform that identifies hostile actors and analyzes vulnerabilities and supply chain risks to predict threat exploitation.

2 investors

Osney Capital is a venture capital firm specializing in early-stage cybersecurity companies in the UK, typically investing in rounds under £5m. The firm provides sector-specific expertise and industry networks to support its portfolio of cyber-focused founders.

2 investors

Ostra Security provides managed cybersecurity services combining advanced tools, proprietary technology, and security talent to deliver enterprise-level threat hunting, remediation, and monitoring for businesses of all sizes. The company makes security accessible to growing organizations that cannot afford large dedicated security teams.

2 investors

Overwatch ID offers a converged identity security platform that includes privileged access management (PAM), identity and access management (IAM), cloud access security broker (CASB), and multi-factor authentication (MFA). It secures privileged user accounts and controls access to critical systems and cloud services such as Salesforce, NetSuite, AWS, ADP, and Concur.

2 investors

P0 provides runtime access control and authorization for AI agents, human users, and non-human/machine identities, discovering sensitive identities and enforcing end-to-end access policies across cloud, servers, and data systems. It is aimed at security teams and developers managing privileged access in hybrid and multi-cloud environments.

2 investors

Palitronica develops physics-based hardware assurance solutions that use radio-frequency signal analysis and machine learning to detect defects, counterfeits, unauthorized design changes, and malicious tampering in electronics. The company serves manufacturers and purchasers in automotive, aerospace & defense, government, medical, and advanced manufacturing sectors.

2 investors

Palosade builds AI agents that work alongside enterprise security teams, integrating into existing workflows with embedded business context to help automate security programs and meet regulatory and customer security requirements. The company targets businesses adopting AI while managing cybersecurity and compliance demands.

2 investors

Pangram Labs builds AI-detection models to identify AI-generated text and mitigate issues caused by generative AI, such as AI-generated spam. Its most recent product is the Pangram 4 model.

2 investors