Cloud Security Consultancy · Benelux
Know Your Risk.
Strengthen Your Cloud.
Your partner in cloud security.
Security that scales with your business.
Security that keeps pace as you grow
Moving fast in the cloud means your risk and your obligations grow faster than a small team can manage. The gaps stay out of sight until they surface at the worst time, a breach that hits your reputation or a funding round that stalls in due diligence. Custos Cloud is the senior security partner that closes them, so you can keep building and sell with confidence, without standing up a security team of your own.
On their own, the risks in your cloud are scattered and easy to miss. An assessment brings them into the light.
Where to start
We help startups and scale-ups secure their cloud. For almost everyone, the right first step is the same.
Recommended starting point
Custos Secure Baseline
Most teams do not know where their security stands, or what to fix first. The baseline answers both: a maturity score across your whole programme, the floor enterprise security reviews look for, and a ranked plan to reach it.
From there, the focused work it points you to
M365 Security Assessment
A structured review of your Microsoft 365 environment against industry-recognised best practices, including Microsoft's own security guidance.
Learn moreAWS Security Assessment
A structured review of your AWS environment against industry-recognised best practices, including Amazon's own security guidance.
Learn moreAzure Security Assessment
A structured review of your Azure environment against industry-recognised best practices, including Microsoft's own security guidance.
Learn moreISO 27001 Readiness
Where you stand against ISO 27001, and a right-sized path to audit-readiness that does not drown you in paperwork.
Learn moreSecOps as a Service
Everything around security operations, day to day or project based, from pipeline security controls and monitoring to recurring reviews and on-call support.
Learn moreSecurity Awareness and Incident Readiness
Security runs through the choices your people make every day. We help your team work securely, recognise the attacks aimed at them, and be ready to respond when one gets through.
Learn moreDark Web Monitoring
Leaked logins surface in criminal markets and breach dumps long before most companies notice. We watch your domains and your team's credentials and alert you as soon as they surface, so you can shut the door before they are used.
Learn moreKnow which level you need to reach
Most teams assume more maturity is always better. For a startup it is not. Level 2 (Managed) is the right starting point. At that level, every part of your security has an owner, is written down, and operates day to day. That clears the security reviews your enterprise customers run. The higher levels add formalisation and measurement a young company does not need yet.
See the full maturity model01
Initial
02
Managed
Baseline
03
Defined
04
Quantitatively Managed
05
Optimising
The Custos Cycle
How the work fits together
New services ship, the team grows, and what you have to protect grows with it. A security posture is a snapshot, accurate the day it is measured and out of date soon after. So we run the work as a method, sized each round to where you are now, from five people to two hundred.
Every round is measured against the last, and leaves proof you can show a buyer, an auditor or an investor.
01
Assess
A scored picture of where your security stands, and the findings behind it.
02
Prioritise
Turn the findings into a ranked roadmap: what to fix first, what can wait, and why.
03
Improve
Your team ships the changes, with us alongside where you want help.
04
Verify
Measure again to confirm what improved and catch what drifted, then set the next target.
Who you work with
Custos Cloud is a founder-led cloud security practice for startups and scale-ups in the Benelux. We come out of day-to-day SecOps and cloud engineering, so the advice is grounded in how cloud platforms are really run.
We work alongside your team to take on cloud security, so they can stay focused on shipping product.
Practitioner-led
Recommendations grounded in running cloud security day to day.
Vendor-neutral
We recommend what fits your stack and your risk, never what someone pays us to resell.
Everything as code
Repeatable, auditable and automated. The way we secure cloud, and the way we build our own.
Want a straight answer on your cloud security?
Book a 30-minute discovery call. No slides, no pressure.
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