“Wazuh Static Analysis” series:
- Part 1: Decoders - decoder XML validation
- Part 2: Rules (you are here) - rule validation and cross-type checking
In Part 1 we built a linter for Wazuh decoder XML files - a tool that validates structure, regex/order consistency, and parent-child decoder chains. But decoders are only half of the event processing pipeline. Decoders extract fields from raw logs, while rules decide what to do with those fields: generate an alert, escalate a threat level, or trigger an automated response. An error in a rule - a missed alert or a false positive - can be more dangerous than a decoder misconfiguration.
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