As cyber threats evolve, APT attacks demonstrate more sophisticated evasion techniques. This presentation delves into a case study of an APT attack targeting the high-tech industry, where the attackers interfered with and damaged the EDR system. Furthermore, the attackers employed a series of clever evasion tactics, making detection and defense more challenging. This presentation aims to provide an in-depth understanding of these techniques and current cybersecurity trends, assisting experts in more effectively preventing and responding to such threats.