The Field-Based Approach in event correlation involves systematically checking and comparing all fields for both positive and negative correlations to determine the relationships across one or multiple fields. This approach is methodical and intentional, examining the data within each field and across fields to identify patterns and connections that may indicate security events or incidents.

Indicators of attack (IoA) provide information about the attacker's intent, end goals, and the actions they take to execute an attack. IoAs help identify the methods and behaviors an attacker uses during the attack lifecycle. Unlike Indicators of Compromise (IoCs), which are used to detect evidence of a breach, IoAs are proactive and help in identifying and preventing potential attacks before they occur by analyzing the patterns and tactics used by attackers. Key risk indicators:
Metrics used to signal increased risk exposure. Indicators of compromise: Artifacts observed on a network or in an operating system that with high confidence indicate a computer intrusion.