On this page
OSSEC / HIDS Rule 516
- Rule family: OSSEC / HIDS
- Rule ID: 516
- Definition status: Present in current source
- Alert message / subject: System Audit event.
- Rule level: 3
- Definition checked: 2026-10-21
Interpretation and response
This event is recorded as “System Audit event.” Review the originating log and the affected host or service to determine whether the activity was expected.
An OSSEC/HIDS event records or correlates activity. Blocking depends on the originating application and any separately configured Active Response policy; an alert alone does not prove that an attack was blocked.
Documentation
The following guidance was migrated from the historical wiki and reviewed against the rule definition. Legacy ASL product names and interface instructions refer to the versions documented then. Use the current metadata above and your installed configuration when interpreting thresholds, notification settings and response behavior.
Description
OSSEC Rootcheck has identified a compliance failure in this component.
What you should do
This means something is reconfigured on the target host based on the configured compliance profile. Investigate the alert and the host to determine what needs to be modified on the system to update its security controls.
Troubleshooting
False Positives
A legitimate event may still trigger this rule. Review the surrounding activity before deciding whether it is malicious.
Tuning Guidance
There is no guidance for tuning this rule.
Additional Information
Support
If you are unsure about how to respond to this alert, please contact Atomicorp support. We’re here to help you!
Source and revision
Migrated from HIDS_516, wiki page 798, revision 6160 (20201022). Documentation review: 2026-10-21. An archived wiki status of Active is not a current deployment status.
For assistance, provide the rule ID, installed product and rule version, and a sanitized event to Atomicorp support .