4rthur is an AI-driven offensive security firm. We combine proprietary tooling with specialist-led validation, delivering security assessment that is faster and more consistent than anything else in the market.
If we find nothing that can be exploited in the agreed scope, you owe us nothing. Full refund. No questions.
Full refund if no Medium, High, or Critical finding is produced.
Low-severity findings, informational issues, and hardening recommendations do not count toward the threshold.
We put our tooling, our methodology, and our commercials on the line. Every engagement.
Companies spend a lot of money on pentests and still get breached because testers ran out of billable days, not attack paths. 4rthur goes from paying under man-days to result-oriented outcomes.
Proprietary AI tooling covering the full external surface from reconnaissance, dynamic analysis, to static review. Built to feed each other. Validated by humans before it reaches your inbox.
Maps the full external footprint before a single manual test begins. Subdomains, exposed services, misconfigured cloud buckets, before the adversary gets there.
Tests web applications like a pentester, fully automated. Logic review, exploit validation, full evidence chain. Achieves autonomous exploitation on XSS, IDOR, Web Cache Deception, and more to come.
Finds real security flaws in source code, not just pattern matches, but exploitable vulnerabilities traced through actual data flows.
Goes after the services, hosts, and the network in between. Exploits real weaknesses, and escalates privilege, then turns the whole engagement into a structured VAPT report.
Standalone attack-surface recon is RM 1,000 — and free the moment you add any package. Full-scope or a bespoke engagement? We'll scope it with you.
Talk to us →Book a attack surface assessment. We'll show you the external footprint your attackers already have before you pay for a pentest.