Securing Your Internal Networks

Internal infrastructure forms the backbone of your organisation's IT operations. While external threats often take priority, vulnerabilities within internal networks – such as unpatched systems, misconfigurations, or weak access controls – can leave your environment exposed to lateral movement and privilege escalation.

SilentGrid's Internal Infrastructure Penetration Testing focuses on identifying and exploiting vulnerabilities within a defined scope to help organisations harden their internal defences. This service simulates insider threats and post-breach scenarios to identify paths attackers could take to compromise sensitive systems.

For a more realistic, objective-driven approach, we recommend our Assumed Breach Assessment. This service shifts the focus from simply listing vulnerabilities to simulating attacker behaviour with the goal of achieving high-value objectives such as data exfiltration, domain compromise, or privilege escalation. Along the way, we identify and report vulnerabilities, misconfigurations, and gaps in detection that adversaries might exploit.

What Sets Us Apart

Vulnerability-Driven Testing for Defined Environments

Internal Infrastructure Penetration Testing targets specific systems, networks, or environments to uncover vulnerabilities that could lead to internal compromise. This vulnerability-focused approach ensures thorough testing without extending beyond predefined boundaries.

Simulated Insider Threats

By replicating the actions of malicious insiders or compromised users, we identify weaknesses in internal systems that could facilitate privilege escalation or lateral movement.

Advanced Manual Testing

We pair manual testing with automated tools to uncover complex attack paths, misconfigurations, and vulnerabilities that scanners alone often miss.

Assumed Breach for Objective-Based Testing

Our Assumed Breach service provides a broader, goal-oriented approach that tests your organisation's resilience to advanced threats. This service mirrors real-world adversary behaviour – focusing on achieving objectives while exposing vulnerabilities along the attack path.

Methodology

SilentGrid's internal penetration testing follows established frameworks, applying adversarial techniques to identify weaknesses across internal networks.

Network Mapping and Asset Discovery

• Enumerating internal devices, systems, and services
• Mapping relationships between systems to understand trust paths and potential pivot points

Vulnerability Analysis and Exploitation

• Identifying misconfigurations, insecure services, and unpatched systems
• Exploiting vulnerabilities to simulate real-world attack scenarios

Privilege Escalation and Lateral Movement

• Escalating privileges through exploited systems
• Moving laterally across the environment to identify additional targets

Credential Harvesting and Reuse

• Extracting and testing stored credentials across the network
• Assessing password policies and credential management

Reporting and Remediation Guidance

• Providing a detailed report outlining vulnerabilities, associated risks, and recommended remediation steps

Deliverables

SilentGrid's internal assessments provide comprehensive technical insights and clear remediation paths to help IT teams strengthen internal defences.

Detailed Vulnerability Report

Outlining identified misconfigurations, unpatched systems, and privilege escalation paths

Proof of Concept (PoC)

Demonstrations of vulnerabilities successfully exploited during the engagement

Remediation Roadmap

Actionable recommendations prioritised by severity and ease of exploitation

Executive Summary

High-level overview for leadership, highlighting key findings and risks

Consultation and Retesting

Post-assessment guidance and retesting to confirm successful remediation

Internal Infrastructure

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