ZeroOne is a specialist offensive security firm. We attack your networks, applications and people with the patience of a real adversary — then hand you the map to shut every door.
Automated scanners find the obvious. We find what they miss — chained flaws, business-logic abuse, and the human path to domain admin. Full-scope, manual-first offensive testing.
A goal-driven, no-holds-barred simulation of a determined adversary. We combine digital, physical and social vectors to reach your crown jewels — and prove your detection and response under real pressure.
Deep manual testing of web apps, single-page frontends and REST/GraphQL APIs — authentication, access control, injection and business-logic abuse mapped against OWASP.
Internal and external testing across on-prem and hybrid estates — from perimeter breach to Active Directory takeover.
Configuration and identity review plus adversarial testing across AWS, Azure and GCP — the way an attacker pivots through your tenancy.
Targeted phishing, vishing and pretexting campaigns that measure how your people — and your controls — hold up against a convincing lure.
iOS and Android application testing alongside developer-led secure code review to catch what dynamic testing alone can't reach.
A disciplined kill-chain, run against the clock and inside agreed rules. You get visibility at every phase — never a black box that goes quiet for three weeks.
We define targets, objectives and rules of engagement, then sign off in writing before a single packet is sent.
Passive and active mapping of your attack surface — assets, identities and exposures an attacker would find first.
Manual exploitation and chaining of vulnerabilities to establish a foothold and prove real impact, not theory.
Privilege escalation and pivoting toward the objectives that matter — data, domain, or business-critical systems.
A prioritised report with reproducible steps, business impact and fixes — plus a live walkthrough with your team.
Once you've remediated, we verify each fix and confirm the door is genuinely closed. Proof, not promises.
Every engagement is run by senior, certified operators — no juniors learning on your network. This is the crew that turns up when it counts.
Book a scoping call. We'll map objectives, agree rules of engagement, and give you a fixed quote — no obligation.
