Cybersecurity Startups

Catalyst Tech provides AI-driven multiplayer microsimulations that train organizational teams in crisis decision-making, coordination, and resilience. The platform enables executives, operations teams, and cross-functional units to practice response scenarios and generate measurable evidence of readiness against regulatory frameworks.

1 investor

Caution is a verifiable confidential compute platform that deploys sensitive workloads to secure enclaves and provides cryptographic proof that production code matches the reviewed source, build, and configuration. It currently runs on AWS Nitro Enclaves and serves high-assurance workloads such as AI model serving, healthcare data, key management, and blockchain node operation.

1 investor

Cavero Quantum develops software-based quantum-safe cryptographic solutions for cybersecurity. The company serves businesses seeking protection against quantum computing threats through symmetric cryptography and post-quantum cryptography technologies.

1 investor

Cayosoft develops software for managing, monitoring, and recovering hybrid Active Directory and Entra ID environments, aimed at enterprise IT and security teams. Its products focus on identity management, continuity, and disaster recovery in Microsoft cloud and on-premises environments.

1 investor

CBRX is a consultancy that designs, tests and governs AI systems for European enterprises, ensuring compliance with EU regulations including GDPR, NIS2, DORA, the EU AI Act and ISO 42001. It combines AI engineering, cybersecurity and EU regulatory expertise to help organizations deploy AI safely in regulated industries.

1 investor

CBTS provides AI and data foundation services to enterprises, spanning strategy, infrastructure, data engineering, analytics, and governance. The company helps organizations build scalable data platforms and deploy AI capabilities across operations, with expertise in financial services, energy, healthcare, and other sectors.

1 investor

Ceeyu is a European SaaS platform that identifies cybersecurity risks in enterprises and their supply chains through automated scanning and digital questionnaire-based assessments. It helps organizations reduce manual security work and manage third-party risk more efficiently while supporting regulatory compliance.

1 investor

Cellcrypt develops quantum-safe secure communication platforms offering encrypted messaging, voice calls, and file transfers in multiple deployment models. The company serves enterprises, government agencies, and critical infrastructure organizations requiring quantum-resistant encryption and data sovereignty.

1 investor

Censornet (marketed as TrustLayer One) provides a single cloud-based cybersecurity platform combining web, email, and cloud application (CASB) protection with unified policy control and real-time visibility. It serves organisations looking to consolidate fragmented security tools, with a stated focus on the UK market.

1 investor

CENSUS is a cybersecurity engineering firm that provides vulnerability research, security assessments, and red teaming services for Fortune 500 companies and international organizations across defense, automotive, healthcare, banking, and telecommunications sectors.

1 investor

CenterSeat provides compliance software for physical security operations, helping security teams and organizations meet regulatory requirements. The product is offered as a SaaS platform for the physical security and protective intelligence industry.

1 investor

Centific is an AI and data company that builds platforms and services for enterprise AI teams, focused on data quality, workflows, evaluation, and multilingual and vision AI. It serves enterprise customers with data-centric AI development.

1 investor

Centraleyes offers an AI-powered cyber risk register and GRC platform that links risks to controls, compliance frameworks, evidence, remediation, vendor oversight, and executive reporting. It targets security, IT risk, compliance, and audit teams looking to run risk assessments and manage the full GRC lifecycle.

1 investor

Cerbair develops MEDUSA, a multi-band drone neutralization system that uses electromagnetic jamming to disrupt drone navigation across frequencies from 400 MHz to 6 GHz. The system serves defense and security organizations requiring site protection and event security.

1 investor

Cerberus is a US company developing an AI agent for offensive security testing. The tool is positioned as an assistant for penetration testers and security teams, and the company states that formal methods are used to constrain the agent's actions so it cannot cause damage to the systems it tests.

1 investor

Certa provides a no-code platform for third-party lifecycle management, automating vendor and supplier onboarding along with risk, compliance, and ESG profiling. It serves large organizations looking to manage relationships with vendors and partners.

1 investor

BlackBerry Certicom provides cryptographic key management and PKI solutions for securing device firmware, silicon chips, and connected infrastructure throughout their lifecycle. The company serves automotive, IoT, critical infrastructure, and industrial customers with quantum-resistant code signing and identity management technology.

1 investor

Certifaction provides a privacy-focused electronic signature platform that lets users digitally sign documents while keeping their content encrypted and confidential through a "Zero Document Knowledge" approach. It offers a web app, API, and white-label solution supporting legally valid signature standards (eIDAS, ZertES, UETA, ESIGN) for partner companies and sectors such as healthcare, staffing, and public services.

1 investor

Certifaction provides a privacy-first electronic signing platform that processes and encrypts documents locally ("Zero Document Knowledge"), offered as a modular white-label solution through enterprise partners. It serves enterprises in regulated industries such as healthcare, finance, and the public sector, offering qualified electronic signatures compliant with eIDAS and ZertES frameworks.

1 investor

CertiPath provides digital identity and credential validation solutions for high-assurance physical and logical access control across government, regulated industries, and enterprise organizations. Its TrustSuite product line enables credential deployment, validation, and lifecycle management for both physical access and cybersecurity applications.

1 investor

Certiv provides an AI agent assurance layer that runs on the endpoint at the runtime level, discovering both sanctioned and shadow AI agents and checking each model request and tool call against policy before it executes to block data exfiltration and unauthorized actions. It serves enterprise business, IT/compliance, and security teams governing the use of AI coding and workflow agents across macOS, Windows, Linux, and containers.

1 investor

Certta provides identity verification, continuous authentication, and automated compliance tools, including document fraud detection and selfie-based onboarding. It serves industries such as fintech, e-commerce, delivery, and sports betting, with support for regulatory requirements like AML, PEP, and sanctions screening.

1 investor

Cervello provides cybersecurity solutions and resources focused on ensuring operational resilience and security compliance for the rail transportation industry.

1 investor

CETIS provides secure identity management and document issuance solutions, including biometric passports, identity documents, and security printing, for governments and companies. It offers turnkey systems for national identification, credential issuance, and controlled data exchange between authorities, serving clients across four continents.

1 investor