See Your Network the Way an Attacker Does
Network Security and Penetration Testing Services
Firewalls and patching policies look fine on paper until someone tries to break them. Our testers manually probe your internal and external network infrastructure to find the misconfigurations, weak credentials and unpatched services that turn a single foothold into a full compromise.
- NCSC-Aligned Testers
- Testers work to methodology recognized under the NCSC CHECK scheme.
- Full Infrastructure Coverage
- Firewalls, servers, switches and endpoints assessed end to end.
- Exploit Chains, Not Alerts
- We chain misconfigurations together the way a real intruder would.
- Safe Testing Windows
- Agreed hours and rules of engagement protect your live network.
// About Network Penetration Testing
Network Security Services for UK Businesses
Most network security companies will hand you a scan output. Here are 400 findings, good luck. What that never answers is the question your board is actually asking: if someone got onto the guest wifi this morning, how far could they get by lunchtime?
That is what our network security services are built to answer.
We test external perimeter and internal networks by hand, mapping what an attacker can reach from each starting position. Flat networks where one compromised laptop reaches the finance server. Domain accounts with far more privilege than anyone realised. Segmentation that exists on the diagram but not in the switch configuration.
We cover on-premises infrastructure, cloud-hosted networks and hybrid environments, and we work with businesses across the UK including Manchester, London and the North West. The report ranks findings by what they actually let someone do.
- Real Attack Path Mapping
- External and Internal Coverage
- Segmentation and Patching Validated
- Business Impact Focused Reporting
// Coverage
What We Cover
External Network Testing
Assessment of your internet-facing infrastructure from an outside attacker's perspective.
Internal Network Testing
Assessment of what a compromised device or malicious insider could reach.
Firewall and Segmentation Review
Testing of rule sets and boundaries between network zones.
VPN and Remote Access Testing
Assessment of the gateways your teams use to connect remotely.
Credential and Password Policy Testing
Testing of authentication strength across network services.
Legacy System Exposure
Identification of outdated or unsupported systems still connected to the network.
// Methodology
Our Testing Process
- 01
Scoping and Rules of Engagement
We agree scope, testing windows and any systems that require special handling.
- 02
Reconnaissance and Enumeration
We identify live hosts, open services and exposed infrastructure across the target range.
- 03
Vulnerability Analysis
We identify weaknesses through a mix of automated tooling and manual technique.
- 04
Exploitation and Lateral Movement
We safely demonstrate real world impact, including how far a compromise could spread.
- 05
Reporting and Retest
You receive a full report with prioritised remediation and a free retest once fixes are in place.
// Ready when you are
Put your network security and penetration testing services to the test.
// Impact
Why Network Penetration Testing Matters
One Weak Service Is Often Enough
A single unpatched or misconfigured system can give an attacker a foothold that scanning alone never reveals.
// How We Test Your Network
- External attack surface enumeration
- Service and version fingerprinting
- Vulnerability identification and validation
- Credential attacks and password policy testing
- Network segmentation and firewall rule testing
- Lateral movement and privilege escalation testing
- Manual exploitation of confirmed weaknesses
What you get
// Tools We Use
// Why Choose Pluto Cyber Security
Network Testing That Reflects Real Attacker Behaviour
We do not stop at a vulnerability list. Our testers chain findings together the way a real attacker would, so you understand not just what is wrong, but what it would actually let someone do.
Certified Consultants
Our team holds OSCP, GPEN, GIAC and CISSP infrastructure testing certifications.
Manual-First Testing
We validate every finding by hand rather than relying on scanner output alone.
Business Impact Reporting
Every finding is explained in terms of what it means for your organisation, not just its technical severity.
Aligned to UK Expectations
Testing follows NCSC guidance on network security.
External testing looks at what an attacker on the internet could reach. Internal testing assumes a foothold already exists, whether from a compromised device or a malicious insider, and tests how far that foothold could spread.
// Related services
Explore Related Services.
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Ready to Scope Your Network Security and Penetration Testing Services?
Tell us what you need tested. We reply with honest guidance and a fixed-scope quote, usually within one business day.