The Global Incident Response Report 2026 provides an analysis of trends shaping the cyber threat landscape. It highlights four major trends: the acceleration of attack speeds due to AI, the increasing reliance on identity weaknesses by attackers, the expanding risks associated with software supply chains, and the evolving tactics of nation-state actors. The report is based on insights from over 750 incident response engagements, revealing that 87% of intrusions involved multiple attack surfaces and that most breaches were enabled by preventable gaps in security. The document outlines recommendations for defenders, emphasizing the need to secure application ecosystems, implement zero trust principles, and enhance security operations centers for rapid threat detection and response. The report serves as a practical guide for organizations to understand emerging threats, improve their defenses, and reduce the risk of cyber incidents. It also discusses the role of AI in enhancing both attacker capabilities and defense mechanisms.