Cybersecurity Startups

Chain Reaction designs processors, including its 3PU FHE processor, that make fully homomorphic encryption practical for large-scale computation on encrypted data. Its hardware targets privacy-preserving AI and cloud workloads.

1 investor

Chainsight offers a Web3 background check API that detects and blocks transactions with malicious dApps, wallets, fake tokens/NFTs, and phishing sites. The platform provides blockchain labeled data, analytics tools, transaction monitoring (KYT), and investigation tools for securing digital assets across 13+ chains.

1 investor

Chaitin provides enterprise cybersecurity solutions including vulnerability management, cloud workload protection, web application firewalls, and AI-powered threat detection for multiple industries. The company serves organizations across finance, energy, telecommunications, government, and manufacturing sectors.

1 investor

Charm Security builds AI agents for scam, fraud, and cybercrime prevention that combine fraud and security expertise with behavioral psychology, working alongside fraud, financial crime, and customer-facing teams to guide real-time prevention, investigation, and resolution. Its agents, powered by a proprietary HVE model for human vulnerabilities and exploit techniques, integrate with an institution's existing fraud stack to reduce losses and operational costs.

1 investor

ChatSee provides infrastructure for monitoring, governing, and controlling autonomous AI agent behavior in production environments, addressing the gap between traditional software observability and the needs of enterprise AI systems.

1 investor

CheckMate is an Australian safety app that lets users verify people by checking names, photos, and social handles against public profiles and image matches to flag scam and catfishing risks. It also provides suburb safety scores based on police and crime statistics, plus real-time features like one-tap check-ins to trusted contacts and safe zone alerts for personal safety.

1 investor

Cheops provides IT consulting, infrastructure, and cloud solutions to help businesses improve employee productivity and operational efficiency through strategic advice, custom applications, managed services, and infrastructure optimization.

1 investor

Chrysalis provides a digital asset registry platform that authenticates ownership of cryptocurrency and digital assets, enabling owners to protect against loss and optionally sell their claims on registered assets through a marketplace in case of theft, hacks, or bankruptcy.

1 investor

Churches Fire & Security provides fire safety and security installation, maintenance, and compliance services to UK businesses, supported by a nationwide network of trained technicians and certified assessors.

1 investor

Cigent develops data-at-rest security technology, including SSDs, firmware, and software, to protect data throughout its lifecycle against advanced data recovery and exfiltration. It serves defense, government, and commercial organizations, with solutions validated by US agencies such as NSA, NIAP, and DISA.

1 investor

Exein is a runtime cybersecurity company that protects connected devices and systems across automotive, industrial, energy, healthcare, aerospace, and robotics sectors. The company's technology, including its Photon solution, secures Physical AI systems, humanoid robotics, and cloud workloads at the kernel level.

1 investor

CipherData offers AIDR, an AI-driven threat detection and incident response platform whose Triage Agent automatically investigates every security alert, enriches it with built-in threat intelligence, and assigns a verdict (benign, suspicious, or malicious) before escalating to human analysts. It aims to reduce analyst workload for security operations teams by auto-closing benign incidents, mapping attack chains, and documenting evidence with MITRE mappings.

1 investor

Circle offers parental control software and a hardware device (Circle Home Plus) that lets parents filter internet content, block apps and websites, and manage screen time for each family member across phones, computers, gaming consoles, and smart TVs. The service targets families with children, applying age-based filter levels for kids, teens, and adults.

1 investor

Cirpack is a European telecom software vendor providing carrier-grade IP and IMS communication platforms for operators and service providers globally. The company offers a complete software stack including IMS Core, Session Border Controllers, SIP routing, unified communications, and security capabilities, with both CAPEX and SaaS deployment models.

1 investor

Citalid provides a cyber risk quantification platform that translates cybersecurity threats and vulnerabilities into financial metrics and monetary impact assessments for enterprise decision-makers. The platform enables organizations to assess the probability of cyber events, estimate financial losses, and communicate security risks in board-level terms using data-driven insights.

1 investor

Claranet is an IT services company providing cloud infrastructure, cybersecurity, managed networks, and application development services to enterprise organizations globally. The company operates across multiple regions including Europe, North America, South America, and India.

1 investor

Clawvisor provides access control and governance infrastructure for AI agents in production, enabling task-based verification, scoping, and logging while maintaining agent performance. The platform is built for teams running agents that require security controls and audit trails.

1 investor

Cleafy provides fraud detection and threat intelligence software, offered as SaaS, to protect banks and financial institutions against online and mobile banking fraud. Serving major banks in Italy, the EU, and Latin America, its LABS team researches banking malware threats.

1 investor

HUMAN provides malvertising detection and prevention for publishers and ad platforms, using behavioral analysis and threat intelligence to identify and block malicious ads and landing pages in real-time.

1 investor

The page is now owned by Hello Inbox, which provides free email deliverability testing tools and SPF, DKIM, and DMARC record generators to help businesses protect against email spoofing and phishing. The domain previously belonged to ClearedIn, an email security startup acquired in 2022.

1 investor

Cleareye.ai provides AI-powered solutions for trade finance operations and compliance to financial institutions globally. The company offers a platform of patented technologies serving clients across North America, Europe, Asia-Pacific, and the Middle East.

1 investor

ClearForce is a people risk analytics company that combines software, data services, and workflow automation to help organizations mitigate insider threat, workplace safety, and security risks across public and private sectors. The platform serves government agencies, defense contractors, and enterprises in financial services, healthcare, energy, and transportation.

1 investor

Clerk provides authentication and user management for developers, offering drop-in UI components and SDKs for sign-in, profile and organization management, multi-tenancy, and subscription billing. It targets B2C and B2B SaaS applications built on modern web and mobile frameworks.

1 investor

Cleversoft provides cloud-based compliance software and services for financial institutions to manage regulatory requirements. The company serves banks, asset managers, insurers, and funds across EMEA with proprietary tools designed to monitor and implement regulatory changes.

1 investor