Cybersecurity-as-a-service (CSaaS) provider RADICL today announced raising $31 million in a Series A funding round that brings the total raised by the company to $42 million.

Founded in 2021, Boulder, Colorado-based RADICL has built an autonomous virtual security operations center (vSOC) specifically designed for small and medium-sized businesses (SMBs) in regulated or high-risk sectors, such as defense industrial base (DIB) and critical infrastructure.

According to the startup, its solution relies on agentic operators to identify, assess, and respond to attacks at machine speed, tackling increasingly prevalent automated, AI-driven cyber threats.

At the core of RADICL’s CSaaS offering, the vSOC platform provides defense-in-depth and managed compliance, unifying the experience for agentic and human operators, as well as the customer and its MSP.

According to the company, its platform and modular offerings enable SMBs to improve both compliance and cybersecurity posture through nation-state-level threat defense.

To keep pace with evolving threats, the startup says, SOCs need to become increasingly autonomous and heavily reliant on AI instead of being human-centered. The vSOC enables distributed operations across the involved entities, delivering a secure software-led experience.

RADICL’s fresh investment round was led by Paladin Capital Group, with additional support from Access Venture Partners, Denver Ventures, and Cervin Ventures.

The company will use the funding to accelerate the development of its AI-native autonomous vSOC solution, launch new products, and support market adoption.

“An AI-enabled threat tsunami is on the horizon for SMBs as AI accelerates threat actors and widens their target aperture. It is imperative that SMBs, especially those that support U.S. national security, have better options to choose from. RADICL was founded to address this critical concern and is fighting AI with AI,” RADICL co-founder and CEO Chris Petersen said.