Celerium

Celerium

Celerium formed in 2019 when a company founded after the September 11 attacks — one that sold situational-awareness tools for physical threats — spun out its cybersecurity unit as a standalone business. Tommy McDowell, a former U.S. Army veteran and ex-deputy director of the ISAO Standards Organization, now leads the firm from Torrance, California. Its founding recognized that the same resource-strapped organizations struggling with physical readiness increasingly faced ransomware and data-breach campaigns from sophisticated state-linked groups. The firm operates a Cyber Defense Network that powers active breach-prevention and containment products across network defense, compromise defense, and community defense. Its two primary go-to-market lanes are the Defense Industrial Base and healthcare. For defense contractors, Celerium launched the DIB CyberDome in April 2026, a platform that delivers CMMC Level 2 compliance and automated threat blocking to roughly 68,000 small and mid-sized suppliers handling Controlled Unclassified Information (per the firm, April 2026). In healthcare, the Data Breach Defender product protects hospital systems and patient data using technology originally built for the U.S. Department of Defense. The American Hospital Association named Celerium a Preferred Cybersecurity Provider in October 2025 (per the firm, October 2025). Chief Strategy Officer Vince Crisler, a former White House CISO who sold his own startup to Celerium in 2022, drives the public-sector adjacency. The leadership team mixes government operational experience — Crisler, McDowell, and Chief Compromise Response Officer Nate Shiflett, a former Florida state CISO — with commercial finance and marketing. The firm publicizes a six-person C-suite but does not disclose total headcount or AUM. Its products run on AWS cloud infrastructure and emphasize rapid deployment, addressing what the Allianz Risk Barometer identified as the top global business concern in 2024: cyber incidents. Celerium does not raise outside funds in the traditional sense; it sells subscription software to enterprises and government suppliers rather than deploying committed capital. The structural differentiator is Celerium’s community-defense thesis. Rather than selling only to large enterprises, it packages government-certified active defense for the long tail of resource-constrained organizations — small defense contractors and rural hospitals — that share a regulatory or threat community. This creates a network effect where hardening one node in a supply chain raises the cost for adversaries targeting the entire community, a model that traces its lineage back to the company's physical-threat information-sharing origins.