Zero Trust
A security model that eliminates implicit trust from networks and identities — every access request is verified explicitly, regardless of whether it originates inside or outside the corporate perimeter.
What is Zero Trust?
Zero Trust is a security architecture principle — codified in NIST SP 800-207 — that replaces implicit perimeter-based trust with explicit, continuous verification of every access request. The core tenet: never trust, always verify. No user, device, or workload is trusted by default simply because it is inside the corporate network. Every request must be authenticated, authorised against policy, and continuously validated for the duration of the session.
Zero Trust implementation spans five control planes: identity (strong authentication, least-privilege access policies), devices (device health verification before access is granted), networks (micro-segmentation, software-defined perimeters), applications (access brokered through a proxy that applies policy per-session), and data (classification-based access controls, encryption at rest and in transit). Most organisations begin with identity and work outward.
Zero Trust is not a product — it is an architecture philosophy that requires multiple integrated controls. Vendors sell 'Zero Trust Network Access' (ZTNA) solutions that address the network and application planes; identity providers enforce the identity plane. AiRAT designs Zero Trust architectures for FinTech and enterprise clients, mapping each control plane to existing tooling and defining a phased implementation roadmap aligned to compliance requirements (PCI-DSS, ISO 27001, UAE IA).
Examples in production
Identity-first access
A developer's VPN session is eliminated. All application access is brokered through a ZTNA proxy that checks identity (SAML/OIDC), device compliance posture (MDM-enrolled, patch-current, disk encryption active), and access policy (role-scoped) before proxying the connection — re-evaluated every 15 minutes.
Micro-segmentation
East-west traffic between application tiers is controlled by software-defined firewall policies that allow only explicitly permitted flows — a compromised web server cannot reach the database tier without a firewall rule change, logged and alerted.
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Questions about Zero Trust
Is Zero Trust a product I can buy?
No — Zero Trust is an architecture principle, not a product. Vendors sell components that implement Zero Trust controls: ZTNA products for network access, identity platforms for authentication and authorisation, MDM for device compliance, and data classification tools. An effective Zero Trust programme integrates these components into a coherent architecture — which requires design, not just procurement.
Where should a Zero Trust implementation start?
Start with identity: enforce MFA for all users, implement least-privilege access policies, and eliminate shared credentials and standing admin access. Identity is the highest-ROI Zero Trust control and the prerequisite for every other plane. Once identity is hardened, move to device compliance verification before extending to network micro-segmentation and application proxying.
Running a system that uses Zero Trust?
We build production-grade cybersecurity systems for regulated enterprises.