# Detections & Alerting

- [Detection Rules](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules.md): Scanner provides built-in threat detection rules - or you can write your own. These rules run continuously and send you notifications when the rule criteria are met.
- [Out-of-the-Box Detection Rules](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules/out-of-the-box-detection-rules.md)
- [Detection Rules as Code](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules/detection-rules-as-code.md): Collaborate on, review, and continuously test detection rules.
- [Getting Started](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules/detection-rules-as-code/getting-started.md)
- [Writing Detection Rules](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules/detection-rules-as-code/writing-detection-rules.md)
- [CLI](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules/detection-rules-as-code/cli.md)
- [Managing Synced Detection Rules](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules/detection-rules-as-code/managing-synced-detection-rules.md)
- [Detection Alert Formatting](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules/detection-alert-formatting.md): Custom formatting for detection alerts
- [Customizing PagerDuty Alerts](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules/detection-alert-formatting/customizing-pagerduty-alerts.md)
- [MITRE Tags](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/detection-rules/mitre-tags.md): Below are the default MITRE tags in Scanner. These are populated in the list of tags on the detection rule create and edit pages.
- [Event Sinks](/scanner/using-scanner-complete-feature-reference/detections-and-alerting/event-sinks.md): Event sinks are alert destinations.