> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/web/business-logic.md).
# Business Logic
Business logic flaws, workflow bypass, client-side trust abuse, inconsistent controls, and application logic exploitation.
Business Logic notes for PortSwigger Web Security Academy labs, focused on practical testing steps, Burp Suite validation, payload behavior, and exploitation workflow.
## Testing Workflow
1. Identify the vulnerable feature and the relevant request, parameter, header, cookie, or browser-side sink.
2. Reproduce the behavior in Burp Suite with a minimal payload before escalating the attack.
3. Validate impact with a clear proof of concept, such as account access, data disclosure, code execution, SSRF, or state change.
4. Keep payloads, URLs, tokens, and lab credentials unchanged while documenting the exploitation path.
## Labs
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