Offensive Security

Penetration Testing

Manual-led penetration testing of your networks, applications, cloud, and APIs. We exploit what we find, prove the impact, and tell you exactly how to fix it.

Book a scope call All Offensive Security Services

Overview

Penetration testing goes beyond listing vulnerabilities. Within a written, agreed scope and rules of engagement, our penetration testers actively exploit weaknesses to demonstrate what an attacker could actually achieve: what sensitive data is reachable, which systems are at risk, and how individual findings chain into a larger attack path. A penetration testing service structured this way gives you evidence you can show customers, regulators, and your own board.

We scope the engagement to your goals and environment. Targets include external and internal networks, web applications, APIs, cloud environments, and wireless infrastructure. This covers both internal and external network exposure in a single engagement where needed. We conduct web application penetration testing and API penetration testing aligned to OWASP. Testing is conducted black box, grey box, or white box depending on the assurance you need. Every finding includes reproduction evidence, a CVSS-aligned risk rating, and clear remediation steps. Our manual penetration testing approach is paired with appropriate tooling to identify vulnerabilities automated scanners miss, including subtle access control flaws, injection points, and security controls that only appear to be working.

A free remediation re-test is included within an agreed window. When your fixes are in place, we validate them and issue an updated penetration testing report your customers or auditors can rely on. We can discuss your security needs, security posture goals, and compliance requirements on a scoping call, and recommend the right combination of tests for your security programme.

What’s included

External or internal network penetration testing
Web application, API, and cloud security penetration testing
Black, grey, or white box methodology to suit your assurance goal
Manual exploitation and attack-chain analysis
CVSS-aligned risk ratings with reproduction evidence
Executive summary plus developer-ready remediation detail
Remediation re-test and updated penetration testing report

How we work

01
Scope and rules of engagement
We define targets, methodology, testing windows, and rules of engagement with written authorisation before anything is touched.
02
Reconnaissance and surface mapping
We map the attack surface and identify the strongest entry points before moving to active exploitation.
03
Exploit and analyse impact
We manually exploit weaknesses, chain findings where possible, and capture evidence at each step to demonstrate real-world attack impact.
04
Report and re-test
We deliver the full report, brief your team on findings, and re-test fixes within the agreed window.

What you get

Penetration test report with evidence and CVSS-aligned ratings
Executive summary for leadership
Developer-ready remediation guidance
Remediation re-test and updated penetration testing report

Who it’s for

Organisations seeking assurance for customers, regulators, or their own risk programme. Includes PCI DSS penetration testing requirements, SOC 2, ISO/IEC 27001, and annual security testing commitments. Social engineering can be added as a combined vector where in scope.

Frequently asked questions

Which type of penetration test do we need?

That depends on your goals. External network tests assess your internet-facing exposure. Internal tests simulate an attacker who has already gained a foothold inside your perimeter. Web and API testing focuses on your applications and the business logic behind them. We walk you through the right combination during scoping, including whether cloud security or social engineering should be in scope.

Will penetration testing disrupt our production systems?

We agree testing windows and rules of engagement up front and test carefully throughout. Where there is meaningful risk to fragile production systems, we test against a staging environment or schedule sensitive activity in coordination with your team.

Is a re-test after we fix the findings included?

Yes. A remediation re-test within an agreed window is included, and we validate the fixes and issue an updated penetration testing report confirming which findings have been resolved.

Does penetration testing satisfy PCI DSS requirements?

A scoped penetration test covering your cardholder data environment and segmentation controls meets the PCI DSS penetration testing requirement. We can also assist with scoping to minimise what falls inside the CDE. Our pen testers are experienced across cybersecurity compliance requirements for PCI DSS, SOC 2, and ISO 27001 programmes.

What is the difference between a pen test and penetration testing as a service?

A pen test is a point-in-time engagement scoped to a defined target. Penetration testing as a service describes a continuous testing model where testing recurs on a cadence, often with a shared findings backlog. We can structure either model depending on your security programme needs.

See the kind of report you get

Every engagement ends with a report you can act on: an executive summary, CVSS-aligned findings, reproduction evidence, and prioritised fixes. Ask for a redacted sample and we will share one.

Request a sample report