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Penetration testing

Internal Network Penetration Testing

Testing from the perspective of an attacker who already has a foothold inside your network, whether through a compromised laptop, a rogue device or a malicious insider. We model how far that foothold could spread.

How it works

How far one foothold can spread

We start inside, pursue the paths a real intruder would take, and show you which controls actually contain them.

01

Assumed-Breach Starting Point

Attackers rarely stop at the perimeter. A phished laptop, a rogue device or a malicious insider gives them the foothold, and what happens next is what decides the damage.

Our methodology

We start from a realistic internal foothold, standard user access, an unmanaged device or a network drop, and work outward exactly as an intruder would, so the test reflects a breach in progress rather than a theoretical scenario.

  • Assumed breach
  • Insider perspective
  • Realistic foothold
02

Lateral Movement and Privilege Escalation

The real risk is reach: how far a single foothold can spread across your network before anyone notices.

Our methodology

We pursue lateral movement and privilege escalation across network segments, abusing credential reuse, weak segmentation and over-trusted internal services, and prove each step with safe, controlled exploitation.

  • Lateral movement
  • Privilege escalation
  • Credential reuse
03

Access to Sensitive Data and Systems

Domain admin is not the goal in itself. The question is whether an attacker can reach your crown jewels: finance systems, customer data, backups and controllers.

Our methodology

We map the shortest paths from the initial foothold to the systems and data that matter most to your business, showing exactly where segmentation and access controls fail to contain an intruder.

  • Crown jewels
  • Segmentation
  • Data access
04

Containment-Focused Reporting

Knowing an attacker could spread is only useful if you know which control would have stopped them.

Our methodology

Findings are prioritised by the paths they unlock and mapped to the specific segmentation, hardening and monitoring changes that break them, with a retest to confirm the fixes hold.

  • Prioritised
  • Containment
  • Retest
FAQ

Internal Network Penetration Testing FAQs

What is internal network penetration testing?

It tests your network from the perspective of an attacker who already has a foothold inside, whether through a compromised laptop, a rogue device or a malicious insider. It models how far that foothold could spread and what sensitive systems and data it could reach.

Why test internally if our perimeter is strong?

Because perimeters get bypassed, by phishing, a stolen laptop or a supply-chain compromise. Internal testing shows what happens after that first breach: whether weak segmentation and credential reuse let one foothold become a full compromise, or whether it is contained.

How do you get the initial foothold?

We use an assumed-breach model: you provide a realistic starting point such as standard user access or a network connection, and we work outward from there. This is faster and more representative than spending the engagement trying to breach the perimeter first.

Is the exploitation safe to run on production?

Yes. We use safe, controlled techniques with clear rules of engagement, coordinate on sensitive systems, and avoid destructive actions. Anything high-risk is agreed in advance.

Is our data kept private?

Yes. Findings are isolated to your organisation and handled in access-limited environments we control in Australia. Nothing is pooled, sold or fed into public models.

Find out how far a breach would spread

Scope an assumed-breach internal test and see what one foothold could reach. Fixed scope, fixed price, no obligation.

Book a Free Consultation Call 1300 654 898

No obligation, no sales pressure. A senior operator replies within one business day.

1300 654 898Free Consultation