Zero Trust with identity as a axis: the guide to stop stolen credentials and stop lateral movement

The stolen credentials remain one of the most commonly used doors by the attackers to enter corporate networks: according to Verizon's latest report, they represent a significant proportion of the known initial access vectors. (see DBIR data). That reality is no surprise to anyone working in security: the real problem is not only that credentials are lost, but that, once inside, traditional architecture often delivers too wide permits and fragmented visibility, which allows intruders to move and scale privileges with relative freedom.

In theory, the Zero Trust philosophy - which is part of the premise of not giving implicit trust to any identity or device - should root out such attacks. In practice, however, many organizations confuse the adoption of Zero Trust controls with the implementation of a coherent identity strategy. When the measures are deployed as isolated elements - an MFA here, a firewall there - there are gaps among them that the adversaries exploit. For Zero Trust to function in a real and sustainable way, identity must be the central axis: rigorously governed, continuously validated and visible throughout the technological stack.

Apply Zero Trust with the identity in the center It means transforming how access is conceived, not just adding new tools. Instead of assuming that an authenticated session amounts to permission to move freely, each request for access must be broken down into checks on who requests, from which device, in what context and for how long. This paradigm shift reduces the attack surface and limits the impact of committed credentials.

One of the concrete pillars is the strict application of the principle of less privilege. In many companies permissions grow as by magic: job changes, temporary projects and forgotten accesses cause legitimate accounts to accumulate rights they no longer need. If an attacker compromises one of those accounts, inherit that overcapacity. Limiting access to the strictly necessary and granting privileges on a temporary and just-in@-@ time basis drastically reduces the potential damage and makes internal exploration much more expensive for the attacker.

Authentication must also cease to be a timely event. Techniques such as session kidnapping and tokens theft allow an intruder to circumvent initial controls and operate as a valid user. It is therefore increasingly necessary to establish continuous and context- aware authentication mechanisms that consider the health of the device, geolocation, the usual user behavior and other real-time risk factors. Tying identities to confidence devices and checking the endpoint's conformity before allowing access is an additional barrier that makes it difficult to abuse stolen credentials. Tools and approaches that integrate position verification of the device help automate these decisions and mitigate the risk of access from uncontrolled environments.

Another essential part is to limit lateral movement within the network. Zero Trust not only restricts initial access, but requires a verification for each jump: granular segmentation, microsegmentation and policies that require reauthentication or verification scaling when trying to access sensitive resources. This containment transforms incidents that could have become corporate gaps into isolated and manageable events, reducing the time and cost of the response.

Remote work and third-party access have multiplied entry points and thus increased risks. Treating employees, contractors and partners as "default-reliable" is no longer viable. Zero Trust proposes to treat each user and device as unreliable until it proves otherwise: access conditioned by verified identity, device posture and context. This allows consistent controls to be applied regardless of whether someone is connected from the office, from your home or from a supplier, and to revoke privileges immediately when conditions change.

The complexity grows when the environments spread through multiple clouds, inherited systems and SaaS applications. It is therefore critical to centralize governance and identity monitoring. A unique panel for access policies, permit reviews, authentication events and behavior analysis allows you to detect abnormal patterns and respond quickly. Automation in the life cycle of identities - provision, role changes and disprovision - reduces the accumulation of unnecessary permissions and exposure windows.

How to start without paralyzing the organization? The road to Zero Trust is gradual and practical. Many teams get immediate benefits by prioritizing high impact controls: introducing phishing-resistant authentication mechanisms and verifying device health is usually a starting point with clear return. From there, it is appropriate to establish temporary access to privileges, periodic rights audits, and a layer of visibility that correlates identity events with network telemetry and endpoints.

If you are looking for recognized technical references and working frameworks, the NIST guide on Zero Trust Architecture provides a solid conceptual framework (NIST SP 800-207), Microsoft publishes practical material and guides to move Zero Trust to real environments (Microsoft documentation) and the US Cyber Security Agency. USA (CISA) provides recommendations on the adoption of phishing-resistant multifactor authentication (CISA guide). To understand the techniques of session abduction and tokens theft, it is appropriate to review OWASP resources on session management (OWASP Session Management).

There are suppliers that offer specific tools for some of these challenges - for example, solutions that integrate device verification with identity-based access policies - and can facilitate implementation. While technology helps, success depends on design, governance and processes: automating the life cycle of identities, defining control metrics and regular reviews are essential steps for Zero Trust to stop being a collection of controls and become an effective identity-focused strategy.

At the end of the day, protecting identities is not an isolated technical option: it is a transformation that requires coordination between security, operations and business. Starting with high-impact controls, measuring results and evolving towards more sophisticated and automated policies allows for a rapid reduction of the attack surface and a much less dangerous threat to the stolen credentials.

If you are looking for concrete examples or demonstrations of solutions that combine device verification and identity control, you can consult specialized suppliers and compare approaches before designing your own road map. Information with official sources and recognized frameworks helps to avoid improvisations that generate false security sensations.

Recommended sources and readings: Verizon DRIR report https: / / www.verizon.com / business / en-gb / resources / reports / dbir /, NIST SP 800-207 https: / / www.nist.gov / publications / zero-trust-architecture, Microsoft Zero Trust guide https: / / learn.microsoft.com / en-us / security / zero-trust /, CISA recommendations on MFA https: / / www.cisa.gov / publication / implementing-multi-factor-authenthood and OWASP on session management https: / / cheatsheetseries.owasp.org / cheatsheets / Session _ Management _ Cheat _ Sheet.html. For information on solutions that link identity and device verification, you can explore resources from specialized suppliers such as Spacups and compare with other market offers.