Our penetration testing team combines offensive testing with deep IT operations expertise to reveal risks before they disrupt the business across complex IT infrastructure.
Infrastructure Penetration Testing
Andersen's Infrastructure Penetration Testing identifies weak services, Active Directory misconfigurations, and flat segments before they disrupt critical systems. Each engagement maps real attack paths, highlights identified vulnerabilities, and delivers evidence-based findings and remediation priorities for the agreed scope.
Infrastructure security expertise in numbers
We have tested cloud and critical systems across finance, healthcare, industrial, and technology environments.
Our extensive experience across legacy, hybrid, and modern infrastructure helps reduce downtime and improve cyber resilience.
Infrastructure penetration testing services we offer
Andersen maps real attack paths across internal and external networks and network infrastructure, validating lateral movement, privilege escalation, and public exposure before a breach becomes costly while accounting for operational constraints and the real-world conditions that shape identified vulnerabilities.
We assess exposed services and perimeter controls to reveal the paths an external attacker could exploit. This testing focuses on internet-facing systems, edge devices, public entry points, the network perimeter, and external networks that are most likely to be targeted first by cyber threats.
Assessment scope includes:
- Firewall, VPN, and remote access review.
- Exposed services, weak authentication paths, and default or reused credentials.
- Risk validation for east-west movement and data theft.
We test how far an attacker can move after a compromised user account or foothold inside the network. This assessment reveals weak trust relationships, network architecture gaps, internal exposure, and the steps required to move across network segments from one segment to another.
What we validate:
- Network segmentation and internal trust boundaries.
- Movement across LAN and VLAN segments.
- Privilege escalation toward critical systems.
We review AD and identity controls to uncover privilege escalation and domain-level exposure. This helps reveal how low-privilege users could gain access to critical systems, sensitive data, or administrative control across the IT environment, and how they could escalate privileges through weak identity paths.
Coverage includes:
- Kerberos and privilege assignment review.
- Stale memberships and local admin abuse.
- Domain-level escalation and trust weaknesses.
We test Wi-Fi exposure and segmentation to stop unauthorized access and downstream compromise. This review is especially important in office campuses, hybrid networks, and environments where wireless access can become an easy breach route, including locations with IoT devices and physical security dependencies.
Testing focuses on:
- Rogue access points and weak Wi‑Fi controls.
- Client isolation and encryption weaknesses.
- Access paths from wireless footholds to internal systems.
We examine cloud exposure, identity gaps, and misconfigured services before they become breaches. This service is designed for hybrid and multi-cloud environments where public access, IAM weaknesses, and trust boundaries can create major security gaps across digital infrastructure and sensitive information flows.
Our review covers:
- Firewall rules and public exposure paths.
- IAM weaknesses and cloud trust boundaries.
- Cross-environment movement to sensitive data.
We verify whether production, administrative, Cardholder Data Environment (CDE), Demilitarized Zone (DMZ), and sensitive systems are properly isolated from internal pivoting. This confirms whether a single compromise can spread across the environment or whether segmentation controls are doing their job across key communication pathways and network segments.
We check:
- East-west traffic paths across segments.
- Flat network design and weak trust links.
- Controls that reduce blast radius and exposure.
Book an infrastructure penetration test
Security certifications and partnerships
Andersen’s infrastructure security team works with certified specialists and recognized standards to validate security posture, remediation quality, and control maturity.
Common infrastructure vulnerabilities we identify
Unpatched systems and outdated services
Legacy systems and missing patches leave critical services exposed to known attacks and hidden vulnerabilities until validation reveals the true exposure.
Weak credentials and password policy gaps
Poor credential hygiene, weak policies, and authentication weaknesses create easy paths for escalation.
Active Directory misconfigurations
Weak AD trust and privilege settings enable low-level users to penetrate high-value systems and trigger possible attack vectors.
Our infrastructure penetration testing methodology
We define the testing scope, stakeholders, and boundaries before any activity begins. This keeps the assessment focused on the systems and risks that matter most. The primary goal is to align everyone on objectives and critical components to validate. For a standard infrastructure penetration test, we do not include denial-of-service attacks, physical intrusion testing, or social engineering against staff; those are separate engagements or red team exercises.
- Client: confirms asset boundaries, criticality, business priorities, and access approvals.
- Andersen: finalizes objectives, test windows, and escalation paths.
- Typical duration: 0.5–1 day for scoping and approval.
- Artefact: approved scope, rules of engagement, and contact matrix.
Types of infrastructure penetration testing
Black-box infrastructure penetration testing
Simulates a real-world attacker with no prior knowledge, credentials, or internal context. Focuses on identifying whether exposed assets, services, and attack vectors can be leveraged to gain an initial foothold in the environment.
Grey-box infrastructure penetration testing
Uses limited information, such as a defined scope, selected asset details, or standard user-level access. Evaluates how existing exposure, previously disclosed information, or compromised credentials could contribute to a broader compromise.
White-box infrastructure penetration testing
Leverages architectural and configuration context to uncover weaknesses that may not be visible through conventional testing alone. Identifies critical trust relationships and attack paths that could increase the impact of an initial compromise.
Benefits of infrastructure penetration testing
Early threat path identification
Andersen reveals the real paths attackers could take through exposed services, weak trust boundaries, and privileged access chains before a breach escalates.
Risk-based remediation prioritisation
We prioritize findings by exploitability, business impact, and implementation effort so teams can fix the highest-risk issues first, with effort estimates attached to each.
Validating security controls and defences
The assessment confirms whether firewalls, identity controls, segmentation rules, and administrative safeguards actually work in production.
Reducing the risk of infrastructure breaches
By exposing weak configurations and attack paths early, Andersen helps reduce downtime, data exposure, and the risk of costly breaches. This strengthens security governance and supports compliance evidence.
Finding gaps against security standards
We assess posture against common control expectations, helping organizations improve alignment with governance, audit, compliance requirements, and formal due diligence.
What our clients say about our security work
Why choose Andersen for infrastructure penetration testing
Certified offensive security engineers
Our team includes engineers with OSCP, CREST, GXPN, and CEH credentials, which supports hands-on offensive security testing and structured validation of real attack paths.
Network engineering expertise in every test
CCNP and CCNA-level expertise strengthens firewall, segmentation, routing, and east-west traffic analysis in every engagement. This network depth is important for infrastructure testing, where trust boundaries, internal mobility, and access paths matter as much as exposed services.
Manual-first testing
We prioritize manual validation to uncover high-impact gaps that automated checks often miss, while still using the right tools to support the assessment. The goal is to confirm which exposures are real, exploitable, and relevant to your environment.
ISO 27001-certified and SOC 2-audited delivery
ISO 27001 and SOC 2-aligned controls help protect your data and testing evidence across the full engagement lifecycle, from scoping through reporting and remediation follow-up.
Free remediation retesting
Where retesting is included in scope, we validate the relevant attack paths after remediation to confirm closure and measure the residual risk. This support is framed as part of the agreed engagement plan and is not treated as a separate universal promise.
Flexible engagement models
We can tailor the engagement structure to your environment, testing goals, and remediation timeline, helping align scope, reporting, and validation with how your infrastructure is actually operated.
Meet our expert
Vladimir Pedchenko
Senior Director of Managed Services and Security
15+
Years in IT Ops and Security
150+
Active service contracts
99.99%
Uptime for 10% of SLAs
At Andersen, Vladimir leads IT operations and security services, keeping customer systems secure and stable.
- Builds and leads high-performing and scalable IT teams;
- Ensures reliability and resilience across critical systems;
- Leads large-scale transformations and process improvements.
Infrastructure security insights
Andersen reviews the technical and operational factors that influence network resilience, privileged access, and hybrid infrastructure risk — helping organizations strengthen security before a breach happens.
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FAQ
This service evaluates the security of servers, networks, cloud workloads, identity systems, and perimeter controls to find exploitable weaknesses before attackers do. It focuses on attack paths, attack vectors, privilege escalation, and lateral movement through technical infrastructure, including network infrastructure. Infrastructure pentesting, infrastructure pentest, and infrastructure pen testing are the same service under different names.
Get a free infrastructure security consultation
What happens next?
An expert contacts you after having analyzed your requirements;
If needed, we sign an NDA to ensure the highest privacy level;
We submit a comprehensive project proposal with estimates, timelines, CVs, etc.
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