Indepth Pdf 258: Sec503 Intrusion Detection

Sec503 Intrusion Detection In-Depth (PDF 258) — A Practical Guide

1. Signature-based detection: This approach involves matching network traffic or system activity against a database of known attack signatures. Signature-based detection is effective for detecting known threats but may not detect unknown or zero-day attacks.
2. Anomaly-based detection: This approach involves identifying abnormal patterns of behavior that may indicate malicious activity. Anomaly-based detection can detect unknown threats but may generate false positives.
3. Behavioral analysis: This approach involves analyzing system and network activity to identify potential security threats. Behavioral analysis can detect complex attacks and insider threats.
4. Normalization: This process involves standardizing data to facilitate analysis and comparison.

Benefits of the Course

In-Depth Look at SEC503 Topics

Example: A cron job created by a user account at 03:12 running a base64-decoding command indicates persistence and covert data staging.