Cybersecurity Startups

Qognify (Octave) develops Coda, a unified physical security software portfolio that combines video management, AI-powered analytics, PSIM, LiDAR-based protection and incident management to detect, validate, investigate and respond to security incidents. It serves organizations needing holistic security to protect people, property and assets, including regulated environments.

1 investor

Periphery (Qomodo) provides a lightweight, architecture-agnostic security agent that installs at the point of device build and updates on-device as threats and regulations change. It hardens devices, detects breaches, and maintains regulatory compliance for critical infrastructure, defense, and AI infrastructure hardware.

1 investor

Qomplx is a research company that designs and develops technologies in cybersecurity, analytics, simulation, and artificial intelligence. It is based in Reston, Virginia.

1 investor

QuadX Console is a security operations platform that collects logs and security events from various systems and performs automated threat detection, analysis, and response. It combines correlation-based and AI-driven threat detection with threat intelligence gathering, automated incident investigation, customizable response playbooks, and an app store for integrating third-party products.

1 investor

Quantaglion develops the QNT100, a hardware true random number generator that uses the natural decay of atomic nuclei to produce physical randomness rather than software-based pseudo-random numbers. The semiconductor-based entropy device is aimed at post-quantum security infrastructure and applications such as AI, PQC, automotive, and HSMs.

1 investor

Quantum, built by MultiVM Labs, develops post-quantum blockchain infrastructure including a post-quantum-by-default Layer 1 chain, a multichain PQ smart wallet layer for existing EVM chains, and a bridge (Entanglement) that enforces post-quantum authorization. It targets crypto users and the broader EVM ecosystem seeking protection against quantum-computer attacks on classical signatures.

1 investor

Quantum Lock develops a quantum-based remote attestation device that uses entangled photons to physically prove that a remote device's memory has not been tampered with, aimed at operators of critical infrastructure such as satellites, drones, data centres, defence and insurance. The company positions its entanglement-based authentication as a new layer in the cybersecurity stack, built from commercially available photonics components.

1 investor

QO develops quantum key distribution systems that use entangled photons to provide cryptographic security for data networks and space communications. The company serves enterprises and research institutions needing quantum-secured encryption infrastructure for fiber networks and satellite constellations.

1 investor

Quell provides ransomware containment software that detects and halts encryption attacks in real-time, allowing businesses to maintain operations without recovery downtime. The platform uses Active Containment technology to protect enterprise organizations across all industries from ransomware variants.

1 investor

QueryLift builds technology focused on AI-powered search, addressing how consumers increasingly rely on AI answers as their entry point to information and the risks of AI answer manipulation. The company appears to work on protecting or optimizing brand visibility and integrity within AI search results.

1 investor

QuestorAI is an application security tool that detects vulnerabilities in near real-time, prioritizes high-confidence issues, and proposes verified remediations for developer review and approval. It can autonomously handle the full detect-and-fix cycle within scope limits set by the user.

1 investor

Queue-it provides a traffic management platform with virtual waiting rooms, AI-powered bot mitigation, and real-time traffic analytics that keep websites, apps, and APIs stable during high-demand events. It serves businesses handling peak traffic and limited-inventory sales, helping control infrastructure scaling costs and ensure fair access for legitimate customers.

1 investor

QuickLaunch provides an identity and access management (IAM/IDaaS) and integration platform (iPaaS) for higher education institutions, offering single sign-on, multi-factor authentication, automated identity lifecycle management, and no-code connectors to campus systems like SIS, LMS, HRIS, and CRM. The platform helps schools connect students, faculty, and staff to applications while supporting compliance with standards such as FERPA and SOC 2.

1 investor

QuickStart operates a cybersecurity workforce platform that connects skills training, hiring, workforce growth, and readiness validation in one system, using simulations and AI-driven assessments to verify talent for cyber roles. It serves organizations, students, individual job seekers, and government agencies and workforce programs.

1 investor

QuilrAI provides endpoint-level security for AI coding tools that run locally on developer machines, intercepting and governing file access, shell commands, context window contents, and secret exfiltration before they execute. The platform protects enterprises by installing as a lightweight system daemon that monitors Claude Code, Cursor, GitHub Copilot, and other agentic AI tools.

1 investor

Quome provides HIPAA-ready, SOC 2 compliant cloud infrastructure that deploys into a customer's own AWS, GCP, or Azure account, letting teams build and ship applications while staying audit-ready. It targets regulated industries such as healthcare, fintech, and government where standing up compliant infrastructure is otherwise slow and costly.

1 investor

Quorum provides ransomware protection and disaster recovery solutions, available as both local appliances and cloud-based DRaaS (Disaster Recovery as a Service) platforms for enterprise customers.

1 investor

Quranium develops quantum-secure blockchain infrastructure and Layer 1 solutions designed to protect against quantum computing threats. The company serves enterprises and developers building Web3 applications and digital assets.

1 investor

Quside develops quantum random number generator (QRNG) technology that produces certified, observable random numbers meeting NIST SP800-90B standards, used to strengthen digital trust and support quantum-safe cybersecurity. It serves enterprise, telecom, data center, and research customers transitioning to post-quantum security and randomized accelerated computation.

1 investor

Qustodio provides parental control and digital wellbeing software that lets parents filter web content and apps, set screen time limits and routines, monitor activity, track calls and SMS, and locate family members. It works across Android, iOS, Windows, macOS, Chromebook, and Kindle devices for families managing children's online activity.

1 investor

Qwant is a search engine that does not sell or retain users' personal data, offering web search and instant "Flash Answers" via web and iOS/Android apps. It is a French search engine hosted in Europe, aimed at privacy-conscious consumers.

1 investor

RadarFirst offers an AI-forward platform for privacy, legal, security, and compliance teams to manage privacy incidents, AI incidents, AI governance, and custom compliance workflows. It standardizes how incidents are captured, assessed, and documented, helping organizations interpret regulatory obligations and produce consistent, auditable decision records.

1 investor

Radiant Logic provides a unified identity data platform that helps large organizations reduce security risks, improve compliance, and automate identity administration. The company serves enterprises by centralizing identity information across complex environments to enable real-time threat detection and remediation.

1 investor

Radiflow provides cybersecurity risk management solutions for critical infrastructure and industrial enterprises, helping CISOs identify and prioritize threats across operational technology environments. The company protects over 8,000 critical facilities globally.

1 investor