Case Study: Leading Infrastructural Services Company halts ransomware and strengthens security posture with Fortinet

Jolted by Ransomware Attack, Infrastructural Service Provider Emerges Strengthened With Insight and Improved Security Posture

A European infrastructural services provider with more than 1,000 employees was struck by a ransomware attack after an employee opened a phishing spreadsheet and enabled macros, which allowed attackers to deploy Cobalt Strike, exfiltrate multiple gigabytes of data, and halt operations. Although the company had backups and an EDR in place, misconfigurations and alert overload prevented timely detection and containment, creating an urgent need for incident response and root‑cause analysis.

The company engaged FortiGuard Incident Response, which used FortiEDR forensics to identify and clean infected hosts, block ongoing exfiltration, and trace the full attack lifecycle. Within five weeks they contained the incident, restored systems from backups, tuned prevention controls, and delivered remediation and best‑practice guidance—leading to reduced business risk, adoption of FortiEDR and MDR, stronger policies (MFA, least privilege), and improved staff awareness and overall security posture.