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> a potato that does security
Offensive Security Engineer @ intruder.io Scotland aka Ben Marr last updated 2026.09

0x01 Introduction

I do offensive security at Intruder — dev and pentest background. Mostly I poke at web apps and automate the boring parts of finding bugs.

This page is static — no trackers, no frameworks, no cookie banner — and doubles as my GitHub profile and the landing spot for a handful of domains.

0x02 Writing

0x03 Current Research

*Mass exploitation of N-days — automation that turns any CVE or disclosed vuln into a working PoC + vulnerability check within an hour. post soon™
*Reverse engineering — some experiments in doing it at volume. Still cooking.
*Attack surface — poking at what's exposed on the internet.

0x04 PoC Index

Self-hosted PoC gadgets for authorised bug-bounty / pentest work, so client PoCs never depend on third-party infra. SVGs based on Brute Logic's work. Served straight off this host.

$/empty.svg — empty SVG, alert(document.domain) on load.
$/potato.svg — SVG image carrying an alert box.
$/redir.svg — open-redirect PoC. ?url=, &w=1 warns first.
$/c.js — remote-JS execution proof (console).
$/p.js — visual XSS phishing PoC for screenshots.
$/clickjack.html — clickjacking framer. ?url=
$/cors.html — CORS misconfig tester. ?url=
$/csrf.html — CSRF PoC generator. ?action=&fields=
$/pm.html — postMessage / CSWSH tester. ?url=
$/hunter.js — DOM-XSS sink spotter.
$/polyglot.txt — XSS polyglot reference.
$/xxe — OOB XXE DTD generator. ?token=&f=

0x05 Services

$curl 0y.is — this page as plaintext .nfo for terminals.
$0y.is/<slug> — short links for length-restricted fields.
$/meta/<cloud> — 302 to cloud metadata (aws/gcp/azure/…). SSRF testing.
$/echo — your request, exactly as the server saw it.
$/ip — your egress IP.

0x06 Contact

EOFfullstackpotato · Scotland