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Service 01

Network Penetration Testing

External and internal testing of your network, from the perimeter an attacker meets first to the lateral movement they attempt once inside.

What we test

We take a holistic view of a network. The perimeter and the interior are not separate problems — they are two halves of the same attack path, and testing only one of them tells you half of a story.

Whether it is the external walls or the internal corridors of your digital estate, the goal is the same: find the way through before somebody else does, and give you the evidence to close it.

External penetration testing

Your network perimeter is the first line of defense, and it is the part of your estate that every opportunistic attacker on the internet is already looking at.

External testing is the equivalent of testing the locks, alarms, and fences of a physical facility. We assess your internet-facing infrastructure the way an outsider would: no insider knowledge, no asset list handed to us up front, and no assumptions about what you think is exposed.

Comprehensive reconnaissance

We enumerate your public-facing assets from the outside. This routinely surfaces hosts and services that are not on the asset inventory — forgotten staging environments, a subdomain pointed at a decommissioned provider, an admin interface that was only ever meant to be temporary.

Exploit simulation

We reproduce real-world attack patterns against what we find, to establish which exposures are genuinely reachable and which are theoretical. A finding that cannot be exploited in your environment is noted honestly as such.

Tailored reporting

You get actionable findings ranked by real-world risk, with the reproduction steps needed to confirm each one and the specific change needed to fix it.

Internal penetration testing

Securing the perimeter matters. So does knowing what happens the moment it fails, because eventually something will — a phishing email lands, a contractor laptop is compromised, or a supplier connection is abused.

We work from an insider's perspective, whether that insider is a malicious employee or an attacker who has already breached the first line of defense. The question we answer is not "is there a vulnerability" but "how far can someone get, and what do they reach when they get there".

Privilege escalation

We test how far a standard user account can be pushed: unpatched local escalation paths, service accounts with more rights than they need, credentials cached where they should not be, and misconfigured delegation.

Lateral movement

We assess how freely an attacker can move between segments of your internal network, and whether the boundaries you believe exist are actually enforced.

Sensitive data access

We establish what an attacker at each level of access can actually read. The finding that changes the conversation is rarely the vulnerability itself — it is the file share it leads to.

Cloud accounts, identity providers, and SaaS tenants are a different attack surface from the network they hang off. That work is scoped as cloud penetration testing. A read-only pass of the tenant and the pipelines that deploy into it is configuration reviews. Getting onto the network from the car park, rather than from a port or a VPN, is wireless penetration testing.

What you receive

Every engagement ends with a report you can hand to an engineer and a debrief you can hand to a board. Findings are prioritized by exploitability and impact in your environment, not by a generic severity score, and each one carries the evidence needed to reproduce it and the guidance needed to close it. Once you have remediated, we retest to confirm the fix holds.

Common questions

Network Penetration Testing — what clients ask

Should we start with external or internal testing?
External first, if you are choosing one. It covers the surface anyone on the internet can reach today. Internal testing answers a different and equally important question: what happens after someone gets in. Most organizations end up wanting both, and running them together lets us follow a chain from the perimeter all the way through to domain access.
Do you need credentials or network access?
External testing needs nothing but your written authorization and a scope. Internal testing needs a foothold, which is usually a standard user account and a network drop or VPN profile. Starting from a normal employee’s level of access is deliberate: it models the position an attacker reaches after one successful phishing email.
Will testing take systems offline?
No. We agree constraints, blackout windows, and escalation contacts before anything is touched, and we avoid denial-of-service techniques unless you explicitly ask us to test resilience. Where a check carries genuine risk to a fragile system, we tell you first and let you decide.

Strengthen your defenses.

Tell us what you need tested. We’ll come back with scope, timeline, and a fixed price.

Request a quote