Internal Network Pentest
Modern organizations rely on interconnected systems, on-premises infrastructure, and internal applications that often-become attractive targets for attackers after initial access. Our Internal Network Penetration Testing service identifies weaknesses inside your corporate network that could lead to lateral movement, privilege escalation, data compromise, and full domain takeover.
We simulate real-world internal threat actors, including malicious insiders and attackers who have bypassed perimeter defenses, to provide a complete view of internal security risk.
Our Service Methodology
- 1
Scoping & Planning
We define assessment goals, identify in-scope network segments and systems, clarify access levels, and align the testing approach with your IT and security teams to ensure a safe, well-coordinated engagement.
- 2
Reconnaissance & Information Gathering
We map the internal environment by identifying hosts, services, domain structures, user accounts, network shares, and high-value assets, building a clear picture of the attack surface.
- 3
Threat Modeling & Attack Surface Analysis
We analyze Active Directory, network segmentation, administrative paths, legacy systems, and misconfigurations to prioritize likely attack vectors and potential privilege escalation routes.
- 4
Vulnerability Discovery & Exploitation
We perform controlled exploitation of identified weaknesses, including credential attacks, Kerberos abuses, unpatched systems, insecure protocols, weak permissions, and local privilege escalation opportunities.
- 5
Post-Exploitation & Risk Assessment
We assess real-world business impact by evaluating lateral movement opportunities, data exposure risks, privilege escalation potential, and overall resilience against internal attacker scenarios.
- 6
Reporting & Remediation Support
You receive a comprehensive report with an executive summary, detailed findings, CVSS scores, PoC evidence, and prioritized remediation guidance—along with a complimentary retest to verify fixes.
What We Test
Active Directory Security
Misconfigurations, weak GPOs, insecure ACLs, domain trusts, vulnerable service accounts, outdated domain controllers.
Internal Network Services
SMB, RDP, LDAP, Kerberos, WinRM, SSH, FTP, database servers, legacy protocols, printer services, IoT devices.
Workstation & Server Security
Local privilege escalation, missing patches, insecure software, weak local accounts, misconfigured scheduled tasks & services.
Credential & Authentication Security
Password policies, NTLM/LM usage, Kerberos misconfigurations, credential reuse, MFA gaps, insecure storage of secrets.
Network Segmentation & Access Controls
Flat networks, unprotected VLANs, server segment exposure, unrestricted lateral movement paths.
Privilege Escalation Paths
Weak ACLs, writable service paths, GPO abuse, insecure SCCM/NinjaOne/RMM configurations, domain privilege escalation routes.
Data Exposure Risks
Shared folders, internal portals, unprotected file servers, sensitive data stored in plain text.
Compliance & Standards
Compliance Support
- PCI DSS
- Internal segmentation testing, vulnerability management
- ISO 27001
- Annex A: Network & system hardening
- HIPAA
- Technical safeguards for internal systems
- GDPR
- Data access and breach risk reduction
- SOC 2
- Access controls, security monitoring
- NIST CSF
- Identify, Protect, Detect, Respond
Testing Standards
- PTES (Penetration Testing Execution Standard)
- CIS Benchmarks (server and workstation hardening)
- NIST SP 800-115 (Technical Security Testing)
- OWASP ASVS (network-relevant sections)
- MITRE ATT&CK (mapping attack chains)