Leveraging threat intelligence, EDR solutions, and incident investigation techniques is crucial for effectively managing cybersecurity incidents. Threat intelligence helps anticipate risks, while strong incident response capabilities enable timely mitigation, root cause analysis, and system recovery. This presentation will explore how to utilize threat intelligence, EDR tools, and investigative methods to address APTs, ransomware, and data breaches. Key aspects of incident handling, including root cause analysis and defense enhancement, will be discussed. Additionally, we will examine maturity benchmarks for incident response, offering insights into how organizations can assess and improve their preparedness to strengthen cybersecurity resilience.