# False Positives & False Negatives

> Master the accuracy of security detection. Explore the concepts of false positives, false negatives, true positives, and true negatives, and learn how to tune SIEM rules to optimize the signal-to-noise ratio.

Canonical: https://codelivly.com/rooms/false-positives-false-negatives
Last updated: 2026-07-05

| | |
|---|---|
| Level | Intermediate |
| Category | Cybersecurity |
| Lessons | 4 |
| Estimated time | 30 min |
| XP | 200 |

Dive into the critical metrics of SOC accuracy. The False Positives & False Negatives module breaks down the four possible outcomes of security detection and their profound impact on SOC operations.

You will learn how to identify, investigate, and tune false positives to combat alert fatigue, while understanding the severe business risks of false negatives. By the end of this module, you will understand the delicate balance of SIEM tuning, the concept of "Benign True Positives," and how to optimize detection rules for maximum accuracy and operational efficiency.

## Lessons

1. Defining False Positives vs False Negatives (30 min)
2. Common Causes of False Positives (30 min)
3. Tuning Detection Rules to Reduce Noise (30 min)
4. Real Examples & Analyst Decision-Making (30 min)

## Related

- [Learning path: SOC Fundamentals](https://codelivly.com/learning-paths/soc-fundamentals)
- [All rooms](https://codelivly.com/rooms)