ABOUT // ORIGIN
NextdoorSEC is an independent, founder-led offensive-security practice in Antwerp, Belgium, on a mission to pre-emptively safeguard businesses by beating attackers at their own game. You work directly with the person doing the testing.
// 01 · Manifesto
We use the same methodologies, techniques and tooling as the people trying to break in, then we hand you the map before they ever arrive. Real findings, real exploitation, real fixes. Never hypothetical.
// 02 · Why NextdoorSEC
We use the same methodologies, techniques and tooling, both manual and automated, as the malicious actors you're defending against.
A comprehensive, honest picture of your security posture with precise findings and the optimal defenses to match.
We identify and demonstrate actual, exploitable risk through hands-on proof, not hypothetical checklist items.
Threat actors evolve daily. So do we. Our research keeps us ahead of the techniques targeting you tomorrow.
We do one thing: offensive security. That focus is why our work is deeper and our reports sharper.
We're optimistic problem-solvers. Every finding comes with a clear, practical path to fixing it.
$4.44M
Average cost of a data breach
IBM, 2025 global average
1:1
Direct with the founder
no account managers, no handoffs
100%
Manual, human-led testing
a human attacker, never scanner-only
5.0
Average client rating
clear reports, prompt comms
// 06 · The Operator
Chief Hacking Officer
Aydan Arabadzha is the founder and Chief Hacking Officer of NextdoorSEC. He spends his days on the offensive side of security, finding the holes in systems and applications before real attackers do.
// founder-led, by design
NextdoorSEC is an independent, founder-led practice. When you hire us, Aydan does the work himself.
Scoping, testing, the report and the free retest, all by the same person. No outsourcing to a faceless lab, no rotating contractors, and no junior learning on your systems. You always know exactly who is on the other side of the engagement.
Based in Antwerp, working worldwide. Tell us what you need to protect.