Penetration Testing Services

Penetration testing (pen testing) is an authorised, simulated cyberattack on a system performed by a security professional to identify vulnerabilities that could be exploited by a real attacker. Unlike a security audit (which reviews code, configuration, and documentation), a pen test actively probes the running system: the tester attempts to bypass authentication, inject malicious data, escalate privileges, and access data they should not be able to access. The penetration tester documents every successfully exploited vulnerability with a proof-of-concept a specific set of steps that reproduce the finding. The deliverable is a findings report that ranks each vulnerability by severity (using CVSS scoring) and provides specific remediation guidance. Penetration tests must be explicitly authorised written rules of engagement define the scope, prohibited actions, and testing window before testing begins.

Black-box testing simulates an external attacker with no prior knowledge the tester starts with only the application URL, no credentials, no source code access. This tests what is visible from outside the perimeter but may miss vulnerabilities deep in authenticated functionality. Grey-box testing (most common for web application pen tests) provides the tester with user-level credentials for each role (regular user, admin, API key) but no source code access. This enables testing of authenticated functionality the majority of web application vulnerabilities require an authenticated user. White-box testing provides full access source code, architecture documentation, test credentials for all roles. The most thorough approach, but requires more time (the tester must review code as well as test the running application). ClickMasters conducts grey-box pen tests as the default sufficient to cover the OWASP Top 10 comprehensively at the most practical cost.