CREST-Aligned Penetration Testing Services
Penetration testing is essential for identifying security vulnerabilities before malicious actors exploit them. YUPL's UK-based ethical hacking team delivers comprehensive security assessments across web applications, networks, APIs, cloud infrastructure, and mobile applications. Our CREST-aligned methodologies ensure you receive actionable insights that strengthen your security posture.
Unlike automated vulnerability scanners, our penetration testers think like attackers. We chain vulnerabilities, exploit business logic flaws, and demonstrate real-world attack scenarios that quantify actual risk to your organisation. Every engagement delivers a detailed report with prioritised remediation guidance and executive summaries for stakeholder communication.
Our Penetration Testing Services
Web Application Testing
OWASP Top 10, authentication bypass, injection attacks, session management, business logic flaws
Network Penetration Testing
Internal/external assessments, Active Directory attacks, lateral movement, privilege escalation
API Security Testing
REST & GraphQL testing, authentication flaws, broken access controls, data exposure risks
Mobile App Security
iOS & Android testing, reverse engineering, API interception, secure storage analysis
Cloud Security Assessment
AWS, Azure, GCP configuration review, IAM policy analysis, cloud-native attack paths
Red Team & Social Engineering
Full adversary simulation, phishing campaigns, pretexting, physical security assessments
Our Penetration Testing Methodology
We follow industry-standard frameworks including CREST, OWASP Testing Guide, PTES, and NIST to ensure consistent, thorough assessments. Our structured approach combines automated scanning with expert manual testing for comprehensive coverage.
Scoping &
Reconnaissance
We define objectives, rules of engagement, and target scope. Our testers gather intelligence using OSINT techniques to map your attack surface and identify potential entry points.
Vulnerability Discovery
& Exploitation
Manual testing combined with automated tools identifies vulnerabilities. We safely exploit findings to prove impact and chain vulnerabilities to demonstrate realistic attack scenarios.
Reporting &
Remediation Support
Detailed technical reports with CVSS scoring, proof-of-concept evidence, and prioritised remediation steps. We include executive summaries and offer post-test verification of fixes.
Why Choose YUPL for Penetration Testing?
As a UK-based cybersecurity company, we understand the regulatory landscape affecting British businesses. Our penetration testing services help organisations achieve and maintain compliance with PCI DSS, ISO 27001, SOC 2, GDPR, and sector-specific requirements like FCA regulations for financial services.
CREST-Aligned
Industry-leading methodologies and standards
Certified Testers
OSCP, OSWE, CREST CRT, CEH, CISSP
UK-Based Team
Data sovereignty & rapid communication
Dev Integration
We help fix issues, not just find them
Flexible Models
One-off, retainer, or continuous testing
Free Retesting
Verify fixes within 30 days at no cost
Frequently Asked Questions
Penetration testing simulates real-world cyber attacks to identify vulnerabilities in your systems before malicious hackers exploit them. It's essential for protecting sensitive data, meeting compliance requirements (PCI DSS, ISO 27001, GDPR), and demonstrating due diligence to customers, partners, and regulators. Regular pen testing reduces breach risk and provides evidence of your security investment.
Penetration testing costs vary based on scope, complexity, and methodology. A focused web application test typically ranges from £3,000-£8,000, while comprehensive enterprise assessments including network, cloud, and application testing may range from £15,000-£50,000+. We provide fixed-price quotes after scoping to ensure transparency. Contact us for a tailored proposal.
Our reports include an executive summary for leadership, detailed technical findings with CVSS severity ratings, proof-of-concept evidence demonstrating exploitability, step-by-step remediation guidance, and risk-prioritised recommendations. We also provide a walkthrough call to explain findings and answer questions from your technical and business teams.
Yes, all our penetration testing engagements include a retest of critical and high-severity findings at no additional cost within 30 days of your remediation. This verifies that fixes are effective and provides you with a clean report for compliance and stakeholder assurance purposes.
Absolutely. Our testers are experienced in production testing with minimal disruption. We agree on testing windows, avoid destructive tests, maintain open communication channels, and can pause immediately if any issues arise. Many clients prefer production testing as it provides the most realistic assessment of their security posture.
