Keep your data safe and your systems standing
zdir audits, defends and monitors the systems your business runs on, with expert services and the tools we build: Leak Scanner and LoadLab.
Worried about a leak right now? Scan your email for free
What we do
Hands-on security work from people who also build security tools
Security Audits & Pentesting
We test your web apps, APIs and infrastructure the way an attacker would, then hand you a prioritised list of what to fix.
Learn moreData Breach Response
Leaked credentials or a suspected incident? We find out what was exposed, contain it and help you notify the right people.
Learn moreCompliance Consulting
Get ready for GDPR, ISO 27001 or SOC 2 with a gap assessment, the policies you need and controls that fit your team.
Learn moreOur products
Two tools that grew out of our client work, available for you to use directly
Leak Scanner
Check whether an email address appears in known data breaches, and keep watching it.
- Free email breach scan, no sign-in
- Risk score with practical next steps
- Ongoing monitoring and dark web alerts
- Downloadable PDF reports
LoadLab
Load test websites and APIs with real multi-step user flows, powered by k6.
- Login, browse and checkout flows
- Find the breaking point automatically
- Import Postman, OpenAPI or a browser recording
- Branded PDF reports and CI/CD checks
How we work
Services and products working together, from first test to ongoing protection
Assess
We map your systems, data and risks, and test what matters most.
Fix
You get clear findings, ranked by impact, and hands-on help closing them.
Monitor
Our products keep watching for leaks and performance regressions after we leave.
Let's secure what you've built
Tell us what you're worried about. We'll reply within one business day with next steps.