Case Study: Marmon Holdings secures 120+ unique networks and eliminates missed attacks with Abnormal AI

Marmon Holdings, Inc. Secures 120+ Unique Networks with Single Autonomous AI Solution

Marmon Holdings, Inc., a Berkshire Hathaway industrial group with 120+ independent manufacturing companies and 30,000+ employees, needed to unify, automate, and future‑proof email protection across more than 120 unique networks and disparate secure email gateways. Threat actors were increasingly using phishing and AI‑driven social engineering that traditional SEGs and M365 tools missed, overwhelming analysts; Marmon turned to Abnormal AI and deployed Inbound Email Security, Account Takeover Protection, AI Security Mailbox, and Email Productivity to provide a single AI‑based control plane.

Abnormal AI integrated via API to deliver human‑behavior AI, automated investigation and response, and internal‑email monitoring to prevent lateral spread, protecting 120+ security stacks. The deployment produced zero missed attacks and zero false positives in the first 30 days, saved about 112 security analyst hours per month and roughly 1,600+ inbox management hours across the organization, and unified visibility and remediation across Marmon’s decentralized environment.

Marmon Holdings

Jeff Deakins

Director, Information Security and Infrastructure