Coreitech provides CREST-certified penetration testing — external, internal, web app, wireless. From £1,500. Detailed reports, remediation guidance, retesting. Call 0203 834 9728.
PENETRATION
TESTING UK
CREST-certified penetration testing for UK businesses — simulated cyber attacks to find vulnerabilities before criminals do. External, internal, web app, wireless testing. From £1,500.
Penetration testing
for every need
External Penetration Testing
Simulates attacks from outside your organisation — testing internet-facing systems, websites, email servers, and public infrastructure. Identifies vulnerabilities criminals could exploit remotely.
Internal Penetration Testing
Tests your internal network from an insider perspective — simulating disgruntled employees or attackers who gained internal access. Critical for understanding lateral movement risks.
Web Application Testing
Comprehensive security testing of web applications using OWASP Top 10 methodology. Finds SQL injection, XSS, authentication flaws, and business logic vulnerabilities.
Wireless Network Testing
Tests Wi-Fi security across your offices — identifying weak encryption, rogue access points, and wireless network segmentation issues that could allow unauthorised access.
Social Engineering Testing
Phishing simulations, vishing (voice phishing), and physical security testing to assess employee security awareness and identify human vulnerabilities criminals exploit.
Infrastructure Testing
Full infrastructure penetration testing covering servers, network devices, cloud environments (Azure, AWS), Active Directory, and hybrid infrastructure configurations.
Our penetration
testing process
Scope & Planning
Define testing scope, rules of engagement, testing windows, and authorisation. We agree what systems to test, when, and how to minimise business disruption.
Reconnaissance
Gather intelligence on your systems using open-source intelligence (OSINT), network scanning, and vulnerability identification — just like real attackers would.
Exploitation
Attempt to exploit identified vulnerabilities using manual and automated techniques. We document every successful exploit with screenshots and evidence.
Reporting & Remediation
Detailed report with executive summary, technical findings, risk ratings, exploitation evidence, and prioritised remediation guidance. Includes debrief call.
Retesting
After you have implemented fixes, we retest to confirm vulnerabilities are properly remediated. Provides assurance that your security posture has genuinely improved.
Penetration testing —
questions answered
Q.What is penetration testing?
Penetration testing (pen testing) is a simulated cyber attack on your systems, networks, and applications to identify security vulnerabilities before criminals exploit them. Our certified ethical hackers use the same techniques as real attackers to find weaknesses in your defences, then provide detailed remediation guidance.
Q.How often should we do penetration testing?
Most businesses should conduct penetration testing annually, or after significant infrastructure changes (new systems, cloud migration, major updates). Some sectors require more frequent testing such as financial services, healthcare, and businesses handling sensitive data which often test quarterly or bi-annually.
Q.What types of penetration testing do you offer?
Coreitech offers external penetration testing (internet-facing systems), internal testing (from inside your network), web application testing, mobile app testing, wireless/Wi-Fi testing, social engineering (phishing simulations), and physical security testing. We tailor testing to your specific risks and compliance requirements.
Q.Are your penetration testers certified?
Yes. All Coreitech penetration testers hold industry-recognised certifications including CREST, OSCP (Offensive Security Certified Professional), CHECK Team Leader, and Cyber Scheme. Our testing follows PTES (Penetration Testing Execution Standard) and OWASP methodologies.
Q.What happens after the test?
You receive a detailed report including: executive summary for leadership, technical findings with risk ratings (Critical/High/Medium/Low), step-by-step exploitation evidence, prioritised remediation guidance, and retesting to confirm fixes. We also provide a debrief call to walk through findings and answer questions.
Find vulnerabilities
before criminals do
Free consultation — we'll scope your testing, provide a fixed quote, and schedule around your business. Most tests complete in 3-5 days.