Purplehat Cybersecurity finds the weaknesses in your systems before attackers do. Specialized in penetration testing, bug bounty programs and red team operations.
From targeted pentests to full red team simulations — offensive security services that genuinely protect organizations.
In-depth manual testing of web applications, APIs, networks and mobile apps. I think like an attacker and report like a professional.
Setting up and managing responsible disclosure programs. I act as your triage specialist and security partner.
Realistic simulation of advanced threats (APT). I test not just technology, but people and processes too.
Code reviews, architecture assessments and threat modeling. I identify structural risks before they get exploited.
No templates, no automated scanners as the end product. Every engagement is manual, deliberate and fully tailored to your environment.
I find the way in that no one left open.
I work where precision meets nerve. Systems that pass every scan, tick every box, sit behind every firewall — those are the ones I take apart, quietly and completely. Not with noise, but with patience and a read on how things really break.
When I'm done you get one thing: the truth about your defenses, mapped out clean — every door I walked through, and exactly how to close it. No inflated findings. No scanner output dressed up as insight. Just sharp, deliberate work from someone who's spent years on the wrong side of the lock.
That mindset has carried me through hardened mobile banking stacks — defeating layered runtime protection (RASP), certificate pinning, and device-integrity checks through targeted smali patching, then reaching the pre-authentication GraphQL logic the defenses were built to hide.
And not everything I surface stays behind an NDA. Some of it reaches further — feeding large-scale compromised-credential datasets, harvested from infostealer malware logs, to the Shadowserver Foundation for coordinated remediation through national CSIRTs. Millions of records across government, education, and critical-infrastructure sectors, routed to the people who can actually shut the door. A safer net is bigger than any single engagement.
"I break things to make them unbreakable."
Memory-safety and anti-rollback bypass vulnerabilities in the ARM secure boot chain (TF-M / TF-A), coordinated with upstream engineering and PSIRT. Multiple findings accepted and rewarded.
Information disclosure enabling enumeration of the existence of restricted private topics via a flag parameter. Acknowledged and paid via HackerOne.
Broken access control (missing authorization) exposing ~39,000 user records. Remediated by the vendor within 24 hours.
Ready to map out your attack surface? Send a message for a no-obligation introduction or a tailored quote.
info@purplehat.nl