Real-world cybersecurity incident response case studies from Canadian businesses. Lessons from ransomware, data breaches, and business email compromise attacks.
By Damir Grubisa · Founder & CEO, The Cyber Arm Security · Published December 2024 · Updated March 2026
About the Author
Damir Grubisa is the Founder & CEO of The Cyber Arm Security and Group 4 Networks, Toronto’s leading managed cybersecurity MSSP. With 15+ years protecting Canadian businesses from cyber threats, Damir specializes in managed detection & response (MDR), PIPEDA/PHIPA compliance, and AI-powered security operations for SMBs and enterprise organizations across the GTA and nationwide. Connect on LinkedIn →