Individual skill

detecting-insider-threat-behaviors

Detect insider threat behavioral indicators including unusual data access, off-hours activity, mass file downloads, privilege abuse, and resignation-correlated data theft.

internal/tools/skills/data/threat-hunting/detecting-insider-threat-behaviors/SKILL.md

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# Detecting Insider Threat Behaviors

## When to Use

- When proactively hunting for indicators of detecting insider threat behaviors in the environment
- After threat intelligence indicates active campaigns using these techniques
- During incident response to scope compromise related to these techniques
- When EDR or SIEM alerts trigger on related indicators
- During periodic security assessments and purple team exercises

## Detection Gaps & Validation

- **Network logs alone miss the highest-signal exfil.** SIEM-only hunting overlooks USB mass copy (Security 6416 PnP device, Microsoft-Windows-DriverFrameworks-UserMode 2003/2102), local printing, and photographing the screen. Add removable-media and DLP telemetry.
- **Personal-cloud exfil blends with sanctioned use.** Uploads to personal OneDrive/Gmail/Dropbox look like normal SaaS traffic on raw byte volume. You need a CASB/proxy with per-user behavioral baselines, not a global threshold.
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