Internal Penetration Testing

Simulating Real-World Internal Threats to Strengthen Your Security

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Introduction to Internal Penetration Testing

Cyber threats don’t just come from outside your network. If an attacker gains access to your internal systems—whether through a phishing email, compromised credentials, or insider threats—what could they do?

Our Internal Penetration Testing service simulates a real-world security breach from within your network, assessing how far an attacker could move laterally and what resources they could access. By identifying and remediating weaknesses before they are exploited, we help organisations enhance internal security, reduce risk, and meet compliance requirements.

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What is Internal Penetration Testing?

Internal penetration testing evaluates your internal systems, network, and endpoints from the perspective of an attacker who has already gained access. This could be through a phishing attack, a rogue insider, or an external breach that bypasses perimeter defences.

Our CREST-certified testers use manual and automated attack techniques to assess privilege escalation, network segmentation, remote access security, and endpoint vulnerabilities, ensuring your internal defences are as strong as your perimeter.

Common Risks Identified:

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Privilege Escalation

Gaining higher system privileges due to misconfigurations.

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Lateral Movement

Assessing how far an attacker can spread through the network.

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Insecure Remote Access

Identifying weaknesses in VPNs, RDP, and remote working setups.

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Unpatched Systems & Endpoints

Detecting outdated software that could be exploited.

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Lack of Network Segmentation

Ensuring access is restricted to only necessary resources.

Key Benefits of Internal Penetration Testing

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Simulate real-world internal attacks to identify security weaknesses.

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Prevent privilege escalation and limit attacker movement.

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Detect vulnerabilities before they can be exploited.

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Improve network segmentation and access controls.

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Meet compliance requirements (e.g., PCI DSS, ISO 27001).

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Enhance overall security posture with an annual review.

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Gain insights into unseen security risks.

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Non-disruptive testing for a comprehensive security evaluation.

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Why Choose IntaForensics for your Internal Penetration Testing?

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CREST Accredited

Industry-recognised penetration testing expertise.

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Experienced Security Professionals

Certified testers with CRT, CPSA, and OSCP qualifications.

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Free Retesting

Ensuring vulnerabilities are fully remediated.

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Clear, Actionable Reporting

Providing detailed, easy-to-understand remediation steps.

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Confidential & Trusted

Ensuring security, discretion, and expert guidance.

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Approachable & Professional Team

Dedicated experts helping at every stage.

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Strengthen Your Internal Security Today

Understanding your internal security risks is just as critical as securing your external perimeter. Our Internal Penetration Testing service helps you detect, assess, and remediate vulnerabilities before they can be exploited.

Contact our team today to discuss your security needs and request an internal penetration test.

Discover what people think about us.

"Thank you for all the work carried out, the detailed report as well as keeping us in the loop. It was really reassuring to know that nothing malicious has been discovered."

Head of Cyber Security

Air Sec

"IntaForensics have been an excellent partner in helping us improve our security posture over the years. Their team is incredibly knowledgeable, their advice is always helpful, and they're a pleasure to work with. We highly value their contributions and consider them an important part of our security team."

Head of Information Technology

SPAR UK

"IntaForensics have proven to be a valuable partner in supporting us to provide our clients with confidence and reassurance in cyber security. We recommend IntaForensics for their technical expertise, and as a group of people who are great to work with."

Managing Director

Arc IT Solutions

"IntaForensics has consistently provided exceptional cyber security support and guidance. The team is highly responsive and has always gone the extra mile to ensure our needs are met. Their knowledge and professionalism give us the confidence to navigate complex security challenges."

Large Retail Company

"IntaForensics are a trusted cyber security partner. Their knowledge, pragmatism and quality of communications are excellent and always help to make the re-certification process as straightforward as possible."

Informed Solutions

"We had our penetration testing debrief with Liam yesterday, and it was extremely informative. While some aspects were outside my direct expertise, our development team found the instructions and reproduction steps very useful.

The report was comprehensive and easy to explain to stakeholders, which made the process much smoother for us.

Overall, it was a reassuring experience that gave us clear guidance on where to focus our security efforts. It’s something we plan to do on an annual basis moving forward."

NHBS Ltd

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