Cybersecurity
OT and ICS Cybersecurity in Saudi Arabia: Meeting NCA OTCC
Industrial environments cannot be secured like an office network. A practical approach to visibility, segmentation and monitoring that respects safety and uptime.
Key takeaways
- Zero trust replaces implicit network trust with continuous verification of user, device and context.
- Identity is the new perimeter — start with strong authentication and privileged access.
- Progress in phases with measurable milestones; there is no single 'zero trust product'.
- Use NIST SP 800-207 as a reference architecture, not as a checklist.
What zero trust actually means
Traditional security assumed that anything inside the corporate network could be trusted. Cloud services, remote work and supply-chain attacks have made that assumption dangerous. Zero trust, described in NIST Special Publication 800-207, removes implicit trust: every request to a resource is evaluated on the identity of the user, the health of the device and the context of the request, every time.
The five pillars
- Identity — strong, phishing-resistant authentication, conditional access and least privilege.
- Devices — only managed, compliant and healthy devices reach sensitive resources.
- Network — segmentation and encrypted connections so that one compromised host cannot reach everything.
- Applications and workloads — access brokered per application rather than per network, with secure development and runtime protection.
- Data — classification, encryption and data loss prevention follow the data wherever it goes.
Visibility, analytics and automation sit across all five, turning signals into policy decisions.
A phased roadmap
| Phase | Focus | Typical outcomes |
|---|---|---|
| 1. Foundations | Asset and identity inventory, MFA everywhere, privileged access | Most credential-based attacks blocked |
| 2. Device trust | Endpoint management, compliance policies, EDR | Only healthy devices reach corporate data |
| 3. Application access | ZTNA or identity-aware proxies replace broad VPN access | Users reach applications, not networks |
| 4. Segmentation | Microsegmentation of data centres and cloud workloads | Lateral movement contained |
| 5. Data protection | Classification, labelling, DLP and encryption | Sensitive data controlled end to end |
Quick wins in the first 90 days
- Enforce multi-factor authentication for every user, starting with administrators and remote access.
- Remove standing administrative rights and introduce just-in-time elevation.
- Block legacy authentication protocols that bypass MFA.
- Require device compliance for access to email and file sharing.
- Publish the most-used internal applications through an identity-aware access service instead of the VPN.
Common mistakes
- Buying a "zero trust platform" before defining the protect surface — the critical data, applications, assets and services.
- Treating zero trust as a network project and ignoring identity.
- Big-bang rollouts that break business processes and erode support.
- No metrics, so progress cannot be demonstrated to the board.
Measuring progress
Track MFA coverage, the percentage of privileged accounts under just-in-time control, the share of applications accessed through ZTNA rather than VPN, device compliance rates and the number of flat network segments remaining. These measures also map neatly to NCA ECC identity, access and network protection controls, so the same evidence supports compliance.
Next step: our Cybersecurity Solutions team can run a zero trust maturity assessment and build your phased roadmap.
Frequently asked questions
Is zero trust only for large enterprises?
No. Mid-sized organizations often progress faster because their estates are simpler. The principles scale; the tooling choices differ.
Does zero trust mean replacing our VPN?
Over time, for most user-to-application access, yes. VPNs grant network-level access; ZTNA grants access to specific applications after checking identity and device.
How long does a zero trust programme take?
Foundational controls can be in place within three to six months. A mature end-to-end architecture is usually a two- to three-year journey.
NAZZTEC Editorial TeamWritten and reviewed by NAZZTEC practitioners. This briefing is general guidance, not legal advice.
