Test the Whole Attack Chain, Not Just One Side of It
External and Internal Penetration Testing Services
A perimeter test alone will not tell you what happens after a breach, and an internal test alone will not tell you how attackers get in. We combine both in a single engagement, so you see your full risk from the outside in and the inside out.
- Certified Experts
- OSCP, CEH, CRTP & industry-certified testers.
- Real-World Approach
- Manual testing with real-world attack techniques.
- Actionable Reporting
- Detailed findings with clear risk ratings and remediation.
- Confidential & Secure
- Strict NDA, data protection & privacy practices.
// About External & Internal Testing
Your Full Attack Chain, in One Engagement
Most breaches do not stop at the perimeter. An attacker gets in through one exposed service, one phished credential, or one unpatched device, and then moves through the internal network toward the data that actually matters. Testing the outside and the inside separately misses that chain.
This engagement starts where a real attacker would, on the open internet, and continues from an assumed foothold inside your network. You get a single, coherent view of your risk, from your public IP ranges to your Active Directory environment, rather than two disconnected reports.
- Full Attack Chain Visibility
- Realistic Assumed-Breach Testing
- Perimeter and Internal Coverage Combined
- One Consolidated Risk Report
// Coverage
What We Cover
External Perimeter Testing
Assessment of every internet-facing system and service in scope.
Assumed-Breach Internal Testing
Testing from a simulated foothold, mirroring a real post-compromise scenario.
Active Directory Attack Paths
Identification of routes from a standard user account to domain-level access.
Credential Security
Testing of password policies and credential reuse across systems.
Data Access Mapping
Confirmation of what sensitive data a full compromise could actually reach.
Detection Observations
Notes on what activity your monitoring tools did and did not flag during testing.
// Methodology
Our Testing Process
- 01
Scoping and Starting Position
We agree external scope and define the assumed-breach starting point for the internal phase.
- 02
External Assessment
We test your perimeter and public-facing systems for exploitable weaknesses.
- 03
Internal Assessment
We simulate a foothold and test how far it could realistically spread across your network.
- 04
Impact Validation
We confirm what data, systems or accounts a full compromise could reach.
- 05
Reporting and Retest
You receive one consolidated report and a free retest once remediation is complete.
// Ready when you are
Put your external and internal penetration testing services to the test.
// Impact
Why Combined Testing Matters
Breaches Rarely Stay at the Edge
Most serious incidents involve an attacker moving from an initial foothold into deeper systems.
// How We Test Your Full Environment
- External perimeter reconnaissance and exploitation
- Internal foothold simulation from an assumed-breach starting point
- Lateral movement across internal systems
- Privilege escalation toward domain-level access
- Credential harvesting and reuse testing
- Data access and exfiltration path validation
- Detection and response effectiveness observations
What you get
// Tools We Use
// Why Choose Pluto Cyber Security
One Team, One View of Your Real Risk
Splitting perimeter and internal testing across different providers often means two disconnected reports and no clear picture of overall risk. We run both phases as one engagement, so the findings connect and the priorities are clear.
Full Attack Chain Testing
We test the path from the internet to your most sensitive internal systems.
Certified Consultants
Our testers hold OSCP, GPEN, GIAC and CISSP offensive security certifications.
Consolidated Reporting
One report, one risk narrative, no gaps between separate assessments.
Built for UK Assurance
A CREST-aligned methodology, with evidence suitable for Cyber Essentials Plus and ISO 27001.
A standalone network test typically focuses on one side, either external or internal. This engagement combines both in a single, connected assessment that shows the full path a real attacker could take.
// Related services
Explore Related Services.
Get started
Ready to Scope Your External and Internal Penetration Testing Services?
Tell us what you need tested. We reply with honest guidance and a fixed-scope quote, usually within one business day.