Top Series A Cybersecurity companies

Proficio is a world-class Managed Security Service Provider (MSSP) providing managed detection and response solutions, 24×7 security monitoring and advanced data breach prevention services to organizations globally. Our rapid growth is being fueled by the rise in cloud-based services, the acceptance of the Software-as-a-Service (SaaS) model, and the increasing number of cyber security attacks on businesses, hospitals and government. We have developed proprietary security content and threat intelligence tools to identify and proactively defend against advanced attacks and insider threats. Proficio’s founders are veterans of the security and networking industry who have helped guide multiple companies to successful exits. Proficio’s customers benefit from the most advanced security monitoring and 24×7 managed security services that until recently were outside the budget of all but the very largest enterprises. Proficio’s ProSOC service offerings include the following: • 24×7 security event monitoring, alerting, and remediation • Advanced SIEM correlation analysis • Protection against complex attacks and insider threats • Actionable intelligence that enables internal IT teams to effectively and quickly resolve issues • Threat Intelligence • Active Defense that blocks targeted attacks in real time 24×7 • Worry-free compliance audits for: PCI, HIPAA, SOX, GLBA, FFIEC, NERC CIP, and FISMA regulations • Visibility to event logs with easy-to-use web portal, powerful reporting, dashboards, and drill-down analytics • Full management of security devices including patching, health and performance monitoring, and tuning • Free 12 month log retention • Out-of-the-box support for 400+ log sources• Scalable cloud-based deployment – fast implementation and no software or hardware purchases• Advanced scanning eliminating vulnerabilities before they can be exploited

• Series A
• 186 employees
• Founded 2010

Cye combines an AI-native exposure management platform with world-class cyber expertise to help organizations know the financial impact of their cyber exposure, prioritize risk mitigation and automate remediation. Cye’s 500+ customers gain the clarity to make smart defensible decisions that reduce their risk exploitability with speed, and improve their resilience to the hyper dynamic threat landscape. Cye’s customized reporting enables the sharing of vital board-level metrics and validating exposure management over time. In addition, Cye improves cybersecurity maturity by mapping weaknesses and defining targets based on industry frameworks.Founded in 2012, with headquarters in Israel and operations around the world, Cye is funded by EQT and 83North.

• Series A
• 185 employees
• Founded 2012

QNu Labs, incubated in 2016 at IIT Madras, is the pioneer and architect of India’s quantum-secure digital backbone for the national digital trust. QNu Labs patented, certified, battle-ready and military-grade sovereign products and solutions are already deployed by numerous clients globally to secure their critical infrastructure.QNu, an investee company of National Quantum Mission, is a global ’category leader’ and a ‘strategic partner’ that offers quantum-safe infrastructure and platform layers to its clients to adopt and embrace the cutting-edge technology in their security infrastructure without any disruption to their business.A team of 160 passionate engineers, physicists and mathematicians have been working for a decade, ensuring that India remains world-class in quantum cryptography and communication and becomes the leading provider of this technology to the world.Our vision is to be the global trust platform for the quantum-safe future, and our mission is to accelerate the world's transition to it.

• Series A
• 172 employees
• Founded 2016

HiddenLayer, a Gartner-recognized Cool Vendor for AI Security, is the leading provider of Security for AI. Its AISec Platform unifies supply chain security, runtime defense, posture management, and automated red teaming to protect agentic, generative and predictive AI applications. The platform enables organizations across the private and public sectors to reduce risk, ensure compliance, and adopt AI with confidence.Founded by a team of cybersecurity and machine learning veterans, HiddenLayer combines patented technology with industry-leading research to defend against prompt injection, adversarial manipulation, model theft, and supply chain compromise. The company is backed by strategic investors including M12 (Microsoft’s Venture Fund), Moore Strategic Ventures, Booz Allen Ventures, IBM Ventures, and Capital One Ventures.

• Series A
• 171 employees
• Founded 2022

Ballet is an American company focused on broadening cryptocurrency adoption by providing high-quality, easy-to-use cold storage products. Founded in 2019 by industry expert Bobby Lee, Ballet offers physical cold storage solutions suitable for crypto users of all experience levels, with patented security that requires no setup. Today, over $1 billion of digital assets are secured on Ballet products worldwide.

• Series A
• 158 employees
• Founded 2019