Cybersecurity Startups

nsKnox is a fintech-security company offering PaymentKnox, an end-to-end B2B payment fraud protection suite that validates bank accounts worldwide before payments are made and monitors vendor master data. It serves corporations (AP and AR finance teams) and banks across industries such as manufacturing, financial services, insurance, and technology.

2 investors

nSure.ai provides an AI-based payment fraud prevention platform that trains a dedicated model on each customer's data to return fraud decisions in under 500 milliseconds and assumes full liability for chargeback costs. It serves merchants in high-risk sectors such as crypto, gaming, prepaid, and gift cards.

2 investors

Nudge Security provides continuous discovery and visibility of an organization's SaaS and AI application ecosystem, including shadow IT and externally-facing apps, for security teams to identify and remediate risks. The platform automates security controls, vendor reviews, and incident response across enterprise SaaS environments.

2 investors

Nullify is an autonomous AI system that automates product security tasks across detection, triage, remediation and closure, handling vulnerability discovery, impact scoring, exploit proof, and pull request creation without requiring human intervention in the critical path.

2 investors

NVISIONx provides a platform for enterprises to manage and control data risk across their data estates, built by professionals with experience in privacy, security, and risk programs at Fortune 100 companies.

2 investors

Nymi develops wearable authentication devices and connected worker solutions for Industry 4.0 environments, using ECG-based biometric identification to enable secure, persistent access and digital interactions. The company serves industrial and enterprise customers seeking advanced identity and access management technologies.

2 investors

Nymiz provides automated data anonymization and pseudonymization software for law firms and legal operations, using AI-driven techniques to redact personal information across unstructured documents and databases while preserving data utility.

2 investors

Octet issues hardware-signed cryptographic proofs that a mobile device was physically present in a specified geographic region at a given time, using on-device sensor fusion and secure enclave signing. The service serves compliance teams, fraud-prevention teams, and fintech/gaming operators requiring verifiable location attestation for regulatory adherence and account security.

2 investors

Offline Protocol builds a mesh networking software and network layer that lets apps and devices communicate, authenticate, and coordinate when the internet is unavailable, using BLE and WiFi Direct with encrypted sessions. It serves teams operating at the disconnected edge and developers building offline-capable apps.

2 investors

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

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

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

OneLogin provides cloud-based identity and access management (CIAM) solutions that enable organizations to securely manage user authentication and application access across their enterprise infrastructure.

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

Onyx builds a secure AI control plane that lets enterprise security, governance, and infrastructure teams oversee, secure, and measure the use of autonomous AI agents across their systems. The platform aims to help companies manage the risks of operational AI agents while maximizing their value.

2 investors

OpsHelm provides real-time, event-driven cloud inventory and change monitoring across multi-cloud environments, condensing native cloud events into logical changes with contextual, pricing, and historical data. It offers a uniform multi-cloud API and streaming event format for engineering and operations teams to track configuration changes, triage incidents, and reduce time-to-resolution.

2 investors

Optery removes personal information from the internet by helping consumers opt out of data brokers and people search sites that collect and sell their data. The platform provides visibility into where personal information is exposed online and automates the opt-out process.

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

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

Ossprey detects supply chain attacks and malicious dependencies by monitoring code behavior at runtime, identifying packages that scan clean but behave maliciously. It serves engineering teams building software who need runtime security monitoring without slowing development velocity.

2 investors

Cyera provides AI-native data security and classification for enterprises, discovering, governing, and protecting sensitive data across cloud, SaaS, and hybrid environments. The platform combines data discovery, access controls, and automated remediation to reduce data risk and enable compliance.

2 investors