Infrastructure Penetration Testing · United Kingdom
Infrastructure penetration testing. The estate, not just the perimeter.
Servers, Active Directory, hypervisors, backups and the patching that was supposed to cover them. We attack the systems your business actually runs on and prove which ones fall, what they hand over, and in what order to fix them.
CREST-certified operators · servers, identity, virtualisation and backup · every finding human-verified
What is infrastructure penetration testing?
Infrastructure penetration testing is an authorised attack on the systems that run your business: your servers, your identity platform, your virtualisation layer, your backup estate and the patching regime that is supposed to hold it together.
Where network testing asks which routes are open, infrastructure testing asks which hosts fall when somebody walks down them. A tester attacks each system directly, escalates privileges on it, and follows what that access unlocks elsewhere.
The finding that matters most is rarely a single unpatched server. It is the service account that runs on forty of them with the same password, or the hypervisor management interface that one compromised administrator workstation can reach.
What we attack
Every layer your business runs on
Every assessment starts where an attacker would: outside, watching, looking for the one door left ajar. We find it, then we show you the walk-through.
| Layer | What we look for |
|---|---|
| Windows and Linux servers | Missing patches with known exploits, local privilege escalation, weak local administrator credentials and services running with more privilege than they need. |
| Active Directory and identity | Delegation misconfiguration, certificate services abuse, privileged group sprawl, stale accounts and the shortest real path to domain admin. |
| Virtualisation | Hypervisor management interfaces, who can reach them, and whether a compromised administrator workstation can clone or mount a production server. |
| Backup infrastructure | Whether a compromised account can reach, alter or delete your backups. An attacker checks this before encrypting anything, so we check it first. |
| Databases and file services | Default and reused credentials, over-broad permissions, unencrypted sensitive data and connections that expose credentials in transit. |
| Patch and configuration hygiene | Not the scanner list. Which missing patches are genuinely exploitable in your configuration, proven, so your team fixes twelve things instead of nine hundred. |
What you get
The hosts that fell, and the twelve fixes that matter
Every assessment starts where an attacker would: outside, watching, looking for the one door left ajar. We find it, then we show you the walk-through.
- Every host we compromised, how, and what that access unlocked
- The privilege escalation chains in full, with the single fix that collapses each one
- A verdict on your backup estate: reachable from a compromised user account, or not
- A short, ordered fix list rather than an undifferentiated scanner export
- Verified by a CREST-certified operator before it reaches you
- A year of unlimited re-tests through RTP Robin as your estate changes
Before you ask
Infrastructure penetration testing, answered
Every assessment starts where an attacker would: outside, watching, looking for the one door left ajar. We find it, then we show you the walk-through.
What is infrastructure penetration testing?
Infrastructure penetration testing is an authorised attack on the systems your organisation runs on: servers, Active Directory and identity, virtualisation, databases, file services and backup infrastructure. A tester attacks each system directly, escalates privileges, and follows what that access unlocks across the estate. It proves which hosts genuinely fall, rather than which ones a scanner suspects might.
What is the difference between infrastructure and network penetration testing?
Network testing examines the routes between systems: firewalls, segmentation, VLANs, protocols and wireless. Infrastructure testing examines the systems at the end of those routes: servers, identity, hypervisors, databases and backups. Network testing tells you your user network can reach the backup server. Infrastructure testing tells you the backup server falls to a service account password reused across the estate. Buying both gives you the route and the destination.
Do you test our backups?
Yes, and it is one of the findings we treat as decisive. Ransomware only ends an organisation when the recovery path fails alongside the production systems. We test whether the accounts we compromised during the engagement can reach, modify or delete your backup infrastructure, because that is the first thing a competent attacker checks. We do not delete anything: we prove the access exists and stop there.
Our scanner already reports hundreds of infrastructure vulnerabilities. Why do we need this?
Because a scanner cannot tell you which of those hundreds an attacker would actually use, and your team cannot fix all of them. A penetration test proves exploitability in your specific configuration and shows the chains, so you get a short ordered list instead of a long unordered one. The value is the prioritisation, not the discovery. Most clients tell us the useful output was learning that twelve fixes closed the path and the rest was routine patching.
Go deeper
Find out which twelve fixes close the path.
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