Most breaches do not start with a sophisticated exploit. They start with a storage bucket left public, an administration port open to the internet, a flat network in which one compromised laptop can reach everything, or backups that end up encrypted along with production. As environments spread across on-premises systems and several clouds, these gaps multiply faster than teams can review them.
ZERYON helps you design and run infrastructure that resists attack and recovers quickly. We assess your cloud and on-premises configuration against recognised benchmarks, apply Zero Trust principles where they reduce real risk, harden systems and make sure your backup and recovery strategy holds up when it is needed. The goal is not a perfect architecture on paper but measurable risk reduction you can sustain.
What's included
Cloud security posture review
Assessment of Microsoft Azure, AWS and Google Cloud configuration, covering identities, networking, storage, logging and encryption, against CIS Benchmarks and provider best practice, with continuous posture monitoring where needed.
Zero Trust architecture
A practical roadmap based on widely adopted Zero Trust principles, such as those in NIST SP 800-207: continuous verification, least privilege and assuming breach, implemented in stages without slowing the business.
System and network hardening
Secure baselines for servers, endpoints, network devices and Active Directory, attack surface reduction and segmentation that limits lateral movement.
Backup and resilience
Review and design of your backup strategy, including immutable and offline copies, the 3-2-1 rule and recovery objectives, plus restoration tests that prove you can recover.
Secure architecture reviews
Security input on new platforms, migrations and major changes before they go live, when fixing issues costs least.
How we work
Assess
We review configuration, architecture and backup status, combining automated checks with interviews with your technical teams.
Prioritise
We rank findings by exploitability and business impact and agree a realistic plan of quick wins and structural changes.
Implement
We apply or support the changes alongside your teams and providers, with change control and rollback plans.
Verify and maintain
We check that controls work, test restoration and set up monitoring so that configuration does not drift over time.
What you get
A smaller attack surface
Fewer exposed services, tighter permissions and segmented networks that contain incidents.
Recovery you have tested
Confidence, backed by restoration tests, that you can bring critical systems back after ransomware or a major failure.
A clear roadmap
A prioritised plan towards Zero Trust that your teams can carry out and your management can follow.
Evidence for audits
Documented baselines and controls that support ISO 27001, ENS, NIS2 and DORA requirements.
Who it's for
- Organisations migrating to the cloud or running hybrid and multi-cloud environments.
- Companies whose network and Active Directory have grown without a security design.
- Businesses that are not sure their backups would survive a ransomware attack.
- Teams planning a Zero Trust strategy and looking for a realistic starting point.
- Public sector suppliers and regulated entities that must demonstrate secure configuration.
Frequently asked questions
What is cloud security posture management (CSPM)?
CSPM is the continuous assessment of cloud configuration against security best practice and compliance requirements. It detects risks such as public storage, excessive permissions or disabled logging, and helps fix them before an attacker finds them.
What is Zero Trust and where should we start?
Zero Trust is a security model that grants no implicit trust based on network location: every access request is verified according to identity, device and context. The usual starting point is identity, with strong MFA and conditional access, followed by device health, segmentation and least privilege for applications and data.
What does system hardening involve?
Hardening means reducing a system's attack surface: removing unnecessary services and software, applying secure configuration baselines, restricting administrative access, enabling logging and keeping systems patched. It applies to servers, endpoints, network devices, cloud services and directories.
How can we make backups resilient to ransomware?
Keep at least one copy immutable or offline, separate backup credentials from production identities, protect the backup console with MFA, watch for unusual deletions and, above all, test restoration regularly. A backup that has never been restored is an assumption, not a guarantee.
Who is responsible for security in the cloud?
Under the shared responsibility model, the provider secures the underlying infrastructure and the customer is responsible for what they configure on top: identities, data, network rules and, depending on the service, operating systems and applications. Misconfiguration on the customer's side is a frequent cause of cloud incidents.