AS-301a · Module 2

SIEM Integration

3 min read

Agent activity logs in isolation tell you what one agent did. SIEM integration tells you what is happening across your entire agent ecosystem — correlated, contextualized, and connected to security events from every other system in your infrastructure. A Security Information and Event Management system ingests logs from every source, applies detection rules, correlates events across systems, and surfaces the patterns that individual log streams cannot reveal.

Agent-specific SIEM detection rules are different from traditional application rules. Traditional rules look for failed login attempts, privilege escalation, and anomalous data access. Agent rules add new detection categories: prompt injection attempts detected in agent input, unexpected changes to agent behavior or skill registries, communication patterns between agents that deviate from established baselines, and agents accessing resources outside their defined scope. These detection rules operate on the same SIEM platform but require domain-specific knowledge about how agent systems behave normally versus anomalously.

The integration architecture has three components. Log shipping: every agent forwards structured logs — actions, decisions, errors, access events — to the SIEM in a consistent format. Use a log aggregator (Fluentd, Vector, Filebeat) to normalize and ship logs without impacting agent performance. Detection rules: custom rules that identify suspicious agent behavior patterns. These are maintained as code, version-controlled, and reviewed quarterly. Correlation logic: rules that connect events across agents and infrastructure. If Agent A accesses an unusual resource and Agent B simultaneously changes its skill registry, the SIEM correlates these events into a single incident for investigation.