In today's interconnected world, Security Information and Event Management (SIEM) tools have become crucial for organizations to protect against cyber threats such as data leaks and ransomware. Initially used by large corporations, modern SIEM systems are now accessible to various organizations due to advancements in machine learning, automation, and big data analysis. These tools collect and analyze log data to identify anomalies, correlate events, and trigger alerts for potential threats. By utilizing User Event Behavior Analysis (UEBA) and Security Orchestration, Automation, and Response (SOAR), SIEM tools can minimize false positives, automate threat responses, and streamline security operations. Built predominantly for the cloud, these tools offer scalability and comprehensive data analysis capabilities, though they may incur significant storage costs. Overall, modern SIEM solutions enhance security teams' efficiency and bolster organizational security posture by effectively integrating diverse data and threat intelligence.