Penetration Testing
Identify and remediate vulnerabilities within your internal network to prevent data breaches and unauthorised lateral movement.
Discuss an engagementInternal 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.
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.
By replicating the actions of malicious insiders or compromised users, we identify weaknesses in internal systems that could facilitate privilege escalation or lateral movement.
We pair manual testing with automated tools to uncover complex attack paths, misconfigurations, and vulnerabilities that scanners alone often miss.
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.
SilentGrid's internal penetration testing follows established frameworks, applying adversarial techniques to identify weaknesses across internal networks.
Both test the inside of your environment. They answer different questions, so the right choice depends on what you need to know. Read more about Assumed Breach.
Internal penetration testing: targets specific systems and environments.
Assumed breach: simulates a breach, moving laterally across the organisation's infrastructure.
Internal penetration testing: aims to identify and report vulnerabilities.
Assumed breach: focuses on achieving goals such as data exfiltration or domain compromise while identifying vulnerabilities along the way.
Internal penetration testing: evaluates system security at the technical level.
Assumed breach: tests defensive controls, monitoring, and incident response capabilities to provide a realistic assessment of how well internal teams detect and respond to threats.
Plan the year
A single internal test maps the lateral movement and privilege escalation paths inside a defined scope. Where the internal estate changes through the year, an annual program tests internal infrastructure, Active Directory and identity together and retests fixes each quarter.
Explore annual programsSilentGrid's internal assessments provide comprehensive technical insights and clear remediation paths to help IT teams strengthen internal defences.
Outlining identified misconfigurations, unpatched systems, and privilege escalation paths
Demonstrations of vulnerabilities successfully exploited during the engagement
Actionable recommendations prioritised by severity and ease of exploitation
High-level overview for leadership, highlighting key findings and risks
Post-assessment guidance and retesting to confirm successful remediation
SilentGrid's consultants are hand-picked, and between them they have delivered penetration testing globally over decades. Their sector experience covers banking and financial services, insurance, government, critical infrastructure and healthcare, so an assessment is read against how the systems in question are actually run.
Consultants find 0-day vulnerabilities in commercial software and speak or teach at security conferences. That research produces the custom tooling used to reach the flaws automated scanning leaves behind, and it keeps the techniques current. Testing follows concepts set out in NIST, OWASP, PTES and OSSTMM.
CREST ANZApproved company Individual credentials across our team include
Internal infrastructure penetration testing examines a defined internal network the way a malicious insider or compromised user would: mapping hosts, services and trust paths, exploiting misconfigurations and unpatched systems, harvesting and reusing credentials, and escalating privileges within the agreed boundaries. The aim is a prioritised list of vulnerabilities to fix; an assumed breach assessment pursues objectives and tests detection instead.
Internal devices, systems and services within an agreed scope. They are enumerated and mapped for trust paths and pivot points, then tested for misconfigurations, insecure services and unpatched systems, with privilege escalation and lateral movement attempted from what is found.
Internal penetration testing targets specific systems and environments and aims to identify and report vulnerabilities at the technical level. An assumed breach assessment simulates a breach and works towards objectives such as data exfiltration or domain compromise, testing defensive controls, monitoring and incident response along the way.
Yes. The engagement replicates the actions of malicious insiders or compromised users to identify weaknesses that could facilitate privilege escalation or lateral movement.
Yes. Stored credentials are extracted and tested for reuse across the network, and password policies and credential management are assessed.
Yes. The vulnerability-focused approach ensures thorough testing without extending beyond the predefined scope agreed for the engagement.
Yes. Post-assessment consultation and retesting confirm that remediation has been successful.
A detailed vulnerability report covering misconfigurations, unpatched systems and privilege escalation paths, proof-of-concept demonstrations, a remediation roadmap prioritised by severity and ease of exploitation, and an executive summary.
Strengthen your internal defences
Identify vulnerabilities before they can be exploited
Schedule an Internal Infrastructure Penetration Test or learn more about our Assumed Breach Assessments.