Cybersecurity
Cybersecurity
What zero trust actually means beyond the marketing — identity-centric access, microsegmentation, and how teams migrate from perimeter security.
Zero trust replaces the old castle-and-moat model — trust everything inside the network perimeter — with a per-request rule: never trust, always verify. Every access decision is made fresh against identity, device posture, and context, regardless of network location. NIST SP 800-207 is the canonical reference, and CISA's Zero Trust Maturity Model is the framework most enterprises and US federal agencies now plan against.
In practice zero trust is a multi-year migration, not a product you buy. Notifire tracks the components that make it real: identity-aware proxies and ZTNA replacing VPNs, microsegmentation limiting east-west lateral movement, continuous device-posture checks, and the service-to-service identity layer (mTLS, SPIFFE/SPIRE, service mesh) that extends the same principle inside the cluster.
Security
Traditional identity verification is no longer enough to stop sophisticated attacks. Attackers are increasingly using stolen session tokens and compromised devices to bypass logins. Security strategies must evolve to include continuous device verification, making it a critical component of any modern Zero Trust security framework.
Neeraj Dhiman ·
A security model where no user, device, or service is trusted by default just because it's inside the network. Every access request is authenticated, authorised, and evaluated against identity and context before being granted, and access is scoped to the minimum needed. The reference standard is NIST SP 800-207, and CISA's maturity model is the usual planning framework.
A VPN grants broad network access once you authenticate — get on the VPN and you can reach everything routable. Zero trust replaces that with per-application, per-request access through an identity-aware proxy (ZTNA), so a compromised credential or device exposes only the specific resources that identity is authorised for, not the whole network. This drastically shrinks the blast radius of a breach.
Dividing the network into small zones — often down to individual workloads — with explicit policies for which can talk to which. It limits east-west (lateral) movement, so an attacker who compromises one host can't freely pivot across the environment. In Kubernetes this is enforced with network policies and service-mesh authorization; eBPF dataplanes like Cilium make identity-aware segmentation practical at scale.
Usually with strong identity: enforce phishing-resistant MFA, consolidate on a single identity provider, and add device-posture checks. From there, replace the highest-risk VPN access with a ZTNA proxy, inventory east-west traffic, and introduce microsegmentation incrementally. It's a phased program measured against a maturity model, not a single cutover.
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