Guidelines: How to reduce the noise of Falco rules in Sysdig Secure

Reducing noise in Falco rules within Sysdig Secure involves a careful process of rule tuning to minimize false positives while maintaining effective threat detection. The managed Sysdig Secure out-of-the-box rules rely on policies that are periodically updated and categorized by severity, with some policies disabled by default to allow customers to selectively activate them. Creating exceptions is crucial for managing noise from specific rules, such as preventing non-malicious alerts from applications like nginx, and requires precise configurations using fields, operators, and values. The Tuner tool in Sysdig Secure facilitates both manual and automatic tuning by suggesting and applying exceptions to reduce unnecessary alerts, though users must be cautious to avoid overly broad exceptions that might obscure genuine threats. Continuous tuning is essential due to the evolving nature of software and systems, ensuring only significant alerts are prioritized while maintaining comprehensive security oversight.