SEC555 is a hands-on course that teaches security professionals how to effectively leverage Security Information and Event Management (SIEM) platforms for detecting, analyzing, and responding to cyber threats. The course focuses on configuring, tuning, and optimizing SIEM solutions to gather actionable intelligence from logs, events, and network data. Participants will explore advanced analytics techniques, threat hunting methodologies, and real-world scenarios to identify malicious activity and improve incident response. Through practical exercises and case studies, SEC555 equips attendees with the skills to transform their SIEM into a powerful tool for proactive defense and tactical decision-making in dynamic security environments.