ValueMentor Black Box Penetration Testing is a professional security testing service that simulates real-world attacks without prior knowledge of internal systems. The service evaluates external-facing infrastructure and applications to identify vulnerabilities that could be exploited by threat actors. The testing methodology follows a structured process including planning and scoping, reconnaissance using open-source intelligence (OSINT), scanning and enumeration of network assets, vulnerability assessment, active exploitation attempts, post-exploitation activities including privilege escalation and lateral movement, and comprehensive reporting with remediation guidance. Service offerings include external network penetration testing targeting firewalls, VPNs, DNS, and email servers; web application and API testing for flaws such as cross-site scripting (XSS), injection attacks, and authentication weaknesses; OSINT and reconnaissance to map attack surfaces; social engineering tests including phishing campaigns; and vulnerability assessment with exploitation attempts to determine actual risk levels. The service provides detailed documentation of findings with risk classifications and actionable recommendations. Re-testing is conducted to verify that remediation efforts are effective. The approach is designed to help organizations validate their external defenses, meet compliance requirements, and understand security posture from an attacker's perspective.