Zero Trust is a security architecture model that starts from the opposite principle to the traditional one: trust no user, device or network by default, including those 'inside' the corporate perimeter. Every access to resources is continuously verified based on context (identity, device, location, behaviour), and privileges are granted only for as long as needed, with the minimum necessary.
The traditional 'castle-and-moat' model (perimeter firewall as the main defence, freedom inside the network) collapsed with the proliferation of cloud, remote work, BYOD and sophisticated attacks. An attacker who breaches the perimeter — phishing, leaked credentials, a vulnerable device — has free access to everything inside. Zero Trust drastically reduces this blast radius.
Implementing Zero Trust is gradual and rests on multiple layers: mandatory MFA, network segmentation (micro-segmentation where possible), robust Identity & Access Management, continuous monitoring of anomalous behaviour, end-to-end encryption. INFOS designs and implements Zero Trust architectures for customers in sectors where the risk justifies it — financial services, industry with critical IP, and public administrations.