Expert Penetration Testing Services
Manual, real-world attack simulation to uncover the vulnerabilities that scanners miss. Our certified consultants test the way real attackers operate — and give you the intelligence to fight back.
What is Penetration Testing?
Penetration testing — or pen testing — is a structured, authorised simulation of a real-world cyberattack against your systems, networks, or applications. Unlike automated vulnerability scanning, penetration testing uses the same tools, techniques, and mindset as actual threat actors to find what could genuinely be exploited.
The goal is not to produce a list of known CVEs — it is to demonstrate exploitability, chain findings into realistic attack paths, and give your organisation evidence-based assurance of what an attacker could actually achieve. Every engagement is manual, every finding is verified, and every report is written to help your team act.
- Why Pen Testing Matters
- Identify and fix vulnerabilities before a real attacker can exploit them
- Satisfy compliance requirements for ISO 27001, SOC 2, PCI DSS, GDPR, and HIPAA
- Get evidence-based assurance — not just theoretical risk scores from scanners
- Receive developer-ready remediation guidance your team can act on immediately
- Demonstrate security maturity to enterprise customers, partners, and cyber insurers
- Test your detection and response capabilities under real attack conditions
- Our Methodologies
- OWASP Testing Guide, PTES, NIST SP 800-115, MITRE ATT&CK
- Typical Timeline: 3–15 days depending on service and scope
- Report: Executive summary + full technical findings
- Retest: Complimentary, included in every engagement
- Standards: OWASP, NIST, PTES, MITRE ATT&CK
- Confidentiality: NDA signed before any technical discussion
- Our Services
- Our Penetration Testing Services
We test every layer of your attack surface — from external perimeters and web applications to cloud infrastructure, mobile apps, and emerging AI systems.
Enterprise Pen Testing
Full-scope, multi-vector assessment simulating an advanced threat actor across your entire enterprise environment.
Network Pen Testing
Internal and external network attack simulation identifying exploitable misconfigurations and lateral movement paths.
Web App Pen Testing
OWASP-aligned manual testing covering authentication, access control, injection, and business logic vulnerabilities.
API Security Testing
Comprehensive testing of REST, SOAP, and GraphQL APIs against the OWASP API Security Top 10.
Mobile App Pen Testing
iOS and Android security assessment including static analysis, dynamic testing, and backend API review.
AI & LLM Pen Testing
Emerging threat testing for AI-powered applications — prompt injection, data leakage, and LLM integration security.
Cloud Pen Testing
AWS, Azure, and GCP security testing — IAM review, storage exposure, and privilege escalation paths.
Red Team Services
Objective-driven adversarial simulation testing your detection, response, and resilience against a persistent attacker.
SaaS App Security
Multi-tenancy isolation, business logic, and SaaS-specific OWASP risks for cloud-based platforms.
Wireless Pen Testing
On-site Wi-Fi security assessment identifying rogue access points, weak encryption, and network access paths.
Vulnerability Assessment
Systematic, manually validated identification and prioritisation of security weaknesses across your infrastructure.
- Coverage
- What We Test
Our engagements cover every layer of your attack surface. Coverage is agreed during scoping and documented in every report.
- External attack surface — internet-facing systems, applications, and exposed ports
- Internal network — lateral movement paths, privilege escalation, domain compromise
- Web applications — OWASP Top 10 and beyond, including business logic flaws
- APIs — REST, SOAP, and GraphQL endpoints against OWASP API Security Top 10
- Mobile applications — iOS and Android static and dynamic analysis
- Cloud environments — AWS, Azure, and GCP IAM configuration and access review
- AI and LLM integrations — prompt injection, data leakage, and model abuse scenarios
- Wireless networks — Wi-Fi protocols, rogue access points, and WPA2/3 weaknesses
- Social engineering — phishing simulation and security awareness validation
- Physical security — where explicitly in-scope and relevant to the engagement
- Our Methodology
- How We Test
Our methodology is built around the way real attackers operate — not a compliance checklist. Every engagement follows five phases designed to maximise finding depth and minimise disruption to your business.
- 1
- Scoping & Planning
Agree targets, rules of engagement, and objectives before anything starts. You approve the scope in writing. Nothing is tested without your explicit sign-off.
- 2
- Reconnaissance
Map your attack surface the way a real attacker would — passive information gathering, technology fingerprinting, and exposure analysis before active testing begins.
- 3
- Exploitation
Manual testing using real-world tools and techniques. We actively attempt to exploit identified vulnerabilities to demonstrate real-world impact — not just theoretical risk.
- 4
- Post-Exploitation
Where in-scope, assess what an attacker could achieve after initial compromise — lateral movement, privilege escalation, and access to sensitive data or systems.
- 5
- Reporting
Dual-audience report: executive summary with business impact ratings, and a full technical report with CVSS scores, proof-of-concept evidence, and step-by-step remediation guidance.
- 6
- Retest
After your team remediates findings, we verify that critical and high-severity issues are resolved. We issue a formal retest certificate at no additional cost.
What Every Engagement Produces
Executive Summary Report
Risk overview and headline findings written for a non-technical audience — leadership-ready with clear business impact ratings.
Full Technical Report
Every vulnerability documented with classification, CVSS score, proof-of-concept evidence, and step-by-step reproduction instructions.
Developer Remediation Guide
Fix instructions written for the development or infrastructure team, including code-level guidance where applicable.
Framework Coverage Matrix
Documents which OWASP, NIST, or framework risk categories were tested and the findings within each — accepted by auditors.
Retest Certificate
Formal confirmation that all critical and high findings have been remediated — accepted by enterprise procurement and compliance auditors.
Compliance Evidence Pack
Structured evidence bundle formatted for ISO 27001, SOC 2, PCI DSS, or HIPAA auditors — maps findings and coverage directly to the relevant framework controls.
Why Work With Vigilant Defenders
Manual Testing. Not Scanner Output.
Automated tools find known signatures. Our certified consultants find the chained attack paths, logic flaws, and context-specific vulnerabilities that no scanner will surface. Every finding is manually verified — zero false positives.
Reports Built for Action, Not Filing.
Every finding includes a proof-of-concept, a CVSS risk score, and step-by-step remediation guidance written for the team that has to fix it. Your developers and your board both get a report they can use.
Confidentiality From Day One.
We sign a formal NDA before any technical discussion begins. Your vulnerabilities, architecture, and engagement findings are treated with the same confidentiality as attorney-client communications.
We Stay Until It's Fixed.
Every engagement includes a complimentary retest. We verify that your team’s remediations hold and issue a formal retest certificate confirming all findings have been addressed.
Certified, In-House Consultants.
Every engagement is delivered by our own certified professionals — OSCP, CEH, eJPT. We never outsource your testing to third-party contractors.
Fixed-Fee. No Surprises.
Every engagement is quoted at a fixed fee — the price in the proposal is the price on the invoice. No hourly overruns, no scope creep billing. You know exactly what you’re paying before we start.
Frequently asked questions
Everything you need to know about this engagement.
A vulnerability assessment identifies and catalogues known weaknesses using automated tools with manual validation. A penetration test goes further — our consultants actively attempt to exploit those vulnerabilities to demonstrate real-world impact and chain findings into realistic attack scenarios. Both are valuable, but a pen test provides stronger evidence for compliance reporting and board assurance.
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