Individual skill

security-control-differential-testing

Find security-relevant interpretation gaps between layers - client, CDN, WAF, reverse proxy, API gateway, application, framework - using path normalization, method, encoding, header, and version differentials. The goal is a control that one layer honors and another ignores, not generic WAF bypass.

internal/tools/skills/data/application-security/security-control-differential-testing/SKILL.md

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Last checked: Nov 7, 2026

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Repository stars (not skill ratings): 1,313
Repository last updated: Nov 7, 2026
License: Apache-2.0

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cybersecurity Repository topic
security Repository topic
bug-bounty Repository topic
automation Repository topic
autonomous-pentesting Repository topic
ai-agent Repository topic
ai-security Repository topic
ethical-hacking Repository topic
golang Repository topic
penetration-testing Repository topic
control-differential Declared skill tag
waf Declared skill tag
reverse-proxy Declared skill tag
path-normalization Declared skill tag
method-override Declared skill tag
api-gateway Declared skill tag
security Derived category
testing Derived category

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# Security Control Differential Testing

## Purpose

Requests pass through a stack - client, CDN, WAF, reverse proxy, API gateway, application, framework/router - and each layer interprets the SAME bytes slightly differently. A security control enforced at one layer but not another is a bypass. This skill hunts the differentials that CHANGE a security outcome, pairing each experiment with a control request so differences are attributable.

## The Layer Model

```text
Client -> CDN -> WAF -> reverse proxy -> API gateway -> application -> framework/router
```

Determine which layers exist first (response headers, Server/Via/X-Cache hints, cookie domains, error pages, timing on block). Not every target has every layer; test the handoffs you actually observe.