> For the complete documentation index, see [llms.txt](https://book.konstantinsecurity.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.konstantinsecurity.com/readme/pentest/red-team/underground.md).

# Underground

BreachForums, CryptBB, RAMP, Exploit\[.]in, and Xss\[.]is