ot-cybersecurity
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Dragos Turned a Three-Person Side Project Into Security for the Machines Nobody Can Reboot
Dragos began with three practitioners, a packet-capture tool, and a founder who did not want to become a software vendor. A decade later, its field notes defend grids, factories and water systems - and explain why industrial security cannot be treated like office IT.
DeNexus
DeNexus is a Boston-based cyber risk company that quantifies the financial impact of cyber threats to industrial and operational technology (OT) environments. Its DeRISK platform uses AI, machine learning and simulation to predict where breaches are likely in OT/ICS networks, express that risk in dollar terms, and prioritize mitigation by ROI. The company serves CISOs, boards, risk managers and cyber insurers across data centers, energy, manufacturing and transportation, and has expanded into agentic-AI underwriting automation for the industrial cyber insurance market.
Copia Automation
Copia Automation brings modern software practices - Git-based version control, automated backup, code review, and AI-assisted analysis - to the world of industrial automation. Its platform treats PLC and OT code as a critical asset, giving manufacturers visibility, change tracking, and disaster recovery across multi-vendor factory floors. Founded in New York in 2020 by former Uber engineer Adam Gluck, Copia helps plants protect against downtime, ransomware, and lost institutional knowledge while accelerating how industrial machinery is built and maintained.
Airgap Networks Inc. (Acquired by Zscaler)
Airgap Networks was a Santa Clara-based cybersecurity company that built an agentless Zero Trust segmentation platform to stop ransomware and lateral threat movement across enterprise IT, IoT, and OT networks. Using a patented DHCP-proxy architecture, it placed every device in a 'network of one' (a /32 segment) without agents, APIs, or infrastructure upgrades, and shipped an industry-first Ransomware Kill Switch. Founded in 2019 by Ritesh Agrawal and Satish Mohan, the company raised $18.6M before being acquired by Zscaler in April 2024 to extend Zscaler's Zero Trust SASE platform with firewall-free, east-west segmentation.