Trellix , the cybersecurity company delivering the future of extended detection and response (XDR), announced today the Defense Information Systems Agency (DISA) Zero Day Network Defense Program has selected Trellix to protect more than 4 million email inboxes across the U.S. Department of Defense (DoD). Building on a nearly two-decade-long relationship with DISA, Trellix email protection advances the agency’s Zero Trust Architecture (ZTA) adoption and will enable it to migrate on-premises infrastructure to the cloud.

Zero-day attacks are those exploited by cybercriminals before known malicious markers or vulnerabilities have been identified and where protections or patches are not yet deployed. Attackers use sophisticated phishing, spear-phishing, and malicious attachments to exploit zero-day attacks via email, and the growing use of GenAI by cybercriminals makes email attacks easier to develop, plan, and execute at scale.

“DISA supports DoD agencies in better conducting their missions while leading technology best practices and adoption across U.S. government agencies,” said Gareth Maclachlan, Networking and Collaboration Security General Manager, Trellix. “Without secure email solutions, organizations face the growing threat of sophisticated actors entering their infrastructure to conduct espionage, steal or damage data. We’ve seen this happen with Microsoft and the findings in the Cyber Safety Review Board report. Protection for unknown email threats is imperative for all organizations, and even more critical for the agencies protecting national security.”