Multi-Layer Security Assessment for National Energy Infrastructure

What does a grey-box approach mean in this assessment?

Grey-box means the LOGIQUE team started with some information from the client — for example user-level credentials, high-level architecture documentation, or the list of in-scope assets — but still had to find the technical detail, exploitation paths, and configuration gaps itself through active discovery. The approach sits between black-box (no prior information at all, simulating a purely external attacker) and white-box (full access to source code and technical documentation).

For an organization whose ecosystem is as large and as complex as national critical infrastructure, grey-box usually strikes the best balance: more efficient in time and cost than a full black-box engagement, while still reflecting the reality that a real attacker often already holds an entry point or partial information — leaked credentials, an insider threat, exposed documentation — before launching a follow-on attack.

Why does a large-scale engagement need to be split into phases?

Given how broad the scope was, the engagement was split into two structured phases running over several weeks. That let each layer be tested at real depth rather than as a surface scan, and gave the client's team room to act on the first phase's findings in parallel, without waiting for the whole assessment to finish. For an organization with a large digital ecosystem, a phased approach like this helps protect testing quality while shortening the remediation cycle.

Why does Active Directory need to be tested as an integrated part, not a separate add-on?

Treating Active Directory as an integrated part of a single assessment cycle, rather than as a standalone add-on test, is one of the hallmarks of LOGIQUE's methodology. The reason is straightforward: AD is a critical point, because if that layer is compromised the impact can spread across the organization's entire environment no matter how well individual applications are secured.

By treating AD as part of the assessment rather than an add-on beside it, LOGIQUE validates the organization's resilience against chained attack scenarios, in which an attacker moves from one layer to the next. This is what separates an end-to-end assessment from standalone per-asset testing, and it is one of the main reasons organizations with complex infrastructure choose LOGIQUE's multi-layer approach.

Chained-attack validation works by simulating how an attacker who has gained limited access in one layer — for example through a standard user's credentials in a web application — then tries to widen that access into other layers, moving from application access to the internal network and finally attempting privilege escalation at the identity management level. Standalone per-asset testing often misses this risk: each layer can look “secure” on its own while a combination of small weaknesses across several layers opens a full attack path that would never surface if the layers were tested separately.