Cybersecurity Startups

Corellium runs a virtual hardware platform that creates high-fidelity digital twins of iOS, Android, IoT, and automotive devices on native Arm hardware for software developers, security researchers, and penetration testing teams. It supports mobile app pentesting with static and dynamic security testing, and serves enterprises, governments, and experts as an alternative to physical device labs.

2 investors

Corgea provides developer-first security solutions that enable developers and security teams to ship secure code without slowing down development velocity.

2 investors

Cork (Cork Cyber) operates the Vantage platform, a cyber risk intelligence tool that unifies 100+ security integrations to give managed service providers (MSPs) visibility into client vulnerabilities, misconfigurations, and endpoint hygiene. It also offers financial protection as a service, with warranty coverage from $25K to $500K and payouts for covered cyber events, serving MSPs and their clients.

2 investors

Corma provides IT teams with a platform to automate software license management, identity lifecycle, and SaaS access governance. The solution centralizes app management, detects unused licenses, and automates onboarding and offboarding processes while enforcing security compliance.

2 investors

cPacket provides network visibility tools including packet capture, analysis, and delivery, using AI to help network teams with incident detection, investigation, and resolution. Its solutions work across on-prem, hybrid, and multi-cloud environments and are aimed at enterprise network and security teams.

2 investors

CRACI develops software tools that help development teams achieve Cyber Resilience Act compliance without impacting development velocity. The platform serves software teams of all sizes seeking to secure their software supply chains.

2 investors

Cranium provides AI security and governance software that discovers, monitors, and defends AI models, agents, and copilots across enterprise infrastructure. The platform helps security teams defend production AI systems against emerging threats like prompt injection, model drift, and jailbreaks through continuous assessment and automated remediation.

2 investors

Crypto Quantique designs low-footprint security IP and lifecycle software for system-on-chip (SoC), chiplets, and connected IoT devices, ensuring device identity and integrity are anchored in silicon. The company serves semiconductor manufacturers and device makers across IoT and edge computing applications.

2 investors

cubic is an AI-powered code review tool that integrates with GitHub and IDEs to catch bugs, enforce coding standards, and identify security issues. It learns from senior developers' patterns and runs automated scans to find and suggest fixes for code vulnerabilities across multiple programming languages.

2 investors

Cybellum provides automated red team and vulnerability detection software that identifies and validates coding weaknesses in proprietary and third-party code to reduce security risks across product lines. The platform helps manufacturers and enterprises scale security testing, reduce false positives through dynamic validation, and ensure products meet regulatory compliance before market release.

2 investors

CyberFOX provides preventive cybersecurity tools including privileged access management, password management, AI-powered DNS security, and zero trust network access. It is aimed at lean IT teams and managed service providers that need enterprise-grade security without complex setup or high costs.

2 investors

CyberNut provides a gamified security awareness and phishing training platform for K-12 schools, serving students, teachers, and administrators. It includes an analytics dashboard for tracking threat response and awareness across school districts.

2 investors

CyberQ Group is a cybersecurity services provider offering penetration testing, 24/7 security operations centre monitoring, risk assessment, and compliance support for businesses. It serves organisations across the UK, Europe, South Africa, the United States, and Asia with follow-the-sun global support.

2 investors

Cyberwrite offers an AI-powered platform that analyzes data to produce financial risk assessments for cyber insurance decisions. It serves the cyber insurance market with explainable, defensible risk intelligence.

2 investors

CybExer develops immersive testing and training environments for cybersecurity skill development and resilience building. The company provides scalable cyber ranges designed for organizations to conduct realistic and effective cybersecurity training.

2 investors

Cybret builds a security engine that detects complex business logic vulnerabilities in software, focusing on unintended interactions across API endpoints, permissions, states, and data paths that conventional tools and LLM-based scanners miss. It combines a custom engine for breadth with frontier AI models for depth to find and label vulnerabilities that arise from how components interact across a wider system.

2 investors

CybSafe hosts IMPACT, an annual research-focused event examining human factors in cybersecurity. The company publishes reports on human cyber risk trends and findings.

2 investors

CYJAX is a cyber threat intelligence provider offering an AI-driven SaaS platform that helps security teams triage, prioritise, and act on threat alerts. Founded in 2013, it serves enterprise and public-sector customers, including UK national policing.

2 investors

CyLock is an all-in-one offensive security platform that uses AI and machine learning to run automated vulnerability assessments, penetration tests, dark web risk investigations, and phishing awareness training. Its patented, non-intrusive tools serve businesses and system integrators seeking continuous cybersecurity monitoring and NIS2 compliance.

2 investors

Cypago offers an AI-agent-based platform for governance, risk, and compliance (GRC), automating tasks such as compliance gap detection, audit preparation, evidence collection, control testing, and user access reviews across multiple frameworks. It serves IT and compliance teams at organizations seeking to reduce manual work and stay continuously audit-ready.

2 investors

Cyphlens builds content-level encryption that protects data while it is displayed on-screen ("data-in-view"), using its patented Lenscryption technology so files stay encrypted and visible only to verified recipients even if forwarded or intercepted. It targets enterprises and regulated industries needing to safeguard PII, IP, executive communications, and identity verification without passwords, tokens, or trust in the recipient's device.

2 investors

Cyrus provides a mobile app for personal cybersecurity and financial protection, offering account monitoring, dark web scanning, credit monitoring across three bureaus, VPN services, and fraud support for consumers.

2 investors

Cyscale develops a cloud security platform (CSPM/CNAPP) built around a Security Knowledge Graph that helps security teams identify and prioritize risks across cloud infrastructure, identities, and workloads in multi-cloud environments. It serves organizations of all sizes seeking to manage their cloud security posture and reduce breach risk.

2 investors

CYSIAM provides cyber security services including Cyber Threat Intelligence (CTIaaS), a 24x7 Security Operations Centre, threat operations, and Cyber Incident Response, built around its proprietary CTI platform. It serves public and private sector organisations that treat security and resilience risk seriously, operating a wholly UK-based SOC.

2 investors