ValueMentor Assumed Breach Testing is a professional security testing service that simulates scenarios where attackers have already gained initial access to an organization's network. The service operates under the assumption that perimeter defenses have been bypassed, focusing on testing an organization's ability to detect, respond to, and contain active threats. The testing methodology includes simulating lateral movement across devices and networks, privilege escalation attempts to gain administrative or domain-level access, and data exfiltration scenarios targeting sensitive customer or financial information. The service also analyzes Active Directory configurations for misconfigurations and weaknesses that could enable unauthorized access. The engagement process follows a structured approach beginning with planning and scoping to define objectives and critical assets. Testers establish a controlled foothold inside the network through simulated phishing, stolen credentials, or insider threat scenarios. During execution, the team simulates attacker tactics, techniques, and procedures (TTPs) aligned with real-world adversary behavior. Deliverables include detailed reporting that highlights exploited paths, vulnerabilities, techniques used, and business impact with prioritized remediation recommendations. The service includes debriefing sessions with stakeholders and follow-up testing to verify remediation efforts. The service is designed to validate security controls including firewalls, EDR solutions, and monitoring tools under breach conditions. It also provides blue team training through hands-on breach scenarios to improve detection speed and incident response capabilities of internal security teams.