Our internal infrastructure penetration testing pinpoints vulnerabilities within your network, simulating real-world attacks to show exactly where you're exposed. Get immediate insights to fix weaknesses, prevent unauthorised access, and protect critical systems before attackers strike.
Internal infrastructure penetration testing
Internal infrastructure penetration testing with OnSecurity
Our internal infrastructure penetration testing goes beyond surface-level assessments, delivering expert-driven insights into your network's weaknesses.
Reveal hidden weaknesses
You'll gain insight into unpatched and insecure systems and services that could leave your network exposed, identify vulnerable areas attackers could exploit to access staff accounts or critical systems and understand how to prevent unauthorised control of workstations or servers.
Strengthen access security
Ensure stronger protection against intercepted or cracked passwords, safeguard your network from brute force attacks on key services like databases and web applications and secure privileged accounts, such as domain administrators, from potential compromise.
Safeguard critical information
Find ways to prevent unauthorised access to sensitive or mission-critical information, block attackers from establishing a foothold in your network and remain undetected and secure internal communications from potential eavesdropping and exploitation.
What is internal infrastructure penetration testing?
Internal infrastructure penetration testing is ethical hacking of the internal Windows (usually) network infrastructure that belongs to an organisation.
An internal penetration test evaluates the security of your internal infrastructure. It simulates scenarios where an attacker has already breached your network, looking for vulnerabilities to exploit. These attackers could be internal (e.g., unhappy employees) or external actors who have gained access through vulnerabilities, malware, or stolen credentials.
Key aspects of internal penetration testing include the ability to target internal networks, hosts, applications, or a combination of these based on specific needs, and the role of testers to identify access points and attempt lateral movement within the environment.
Get an Instant Internal Infrastructure Pentest Quote
Want to know how much an internal infrastructure pentest would cost? Try out our instant quote generator to get started.
Why do you need an internal network infrastructure pentest?
When attackers target an organisation, their goal is to gain access to its internal network, either by breaching the perimeter or through social engineering tactics like phishing. Once inside, they attempt to reach the organisation’s most valuable assets—the "crown jewels"—by moving through the network, compromising accounts and systems along the way.
An internal infrastructure penetration test assesses how well your network is protected from an attacker who has already gained a foothold. It reveals how easily an attacker could navigate through your network, steal data, or take control of critical systems.
The benefit of this test is that it allows ethical hackers to safely uncover vulnerabilities and identify paths to critical assets, giving you the opportunity to fix weaknesses before malicious attackers exploit them. Without penetration testing, you increase your risk of security breaches that can result in financial losses and severe reputational damage.
Crest-accredited internal infrastructure pentesting
At OnSecurity, we provide industry-leading penetration testing services, backed by our CREST (Council of Registered Ethical Security Testers) certification. This guarantees that our testing methodologies, procedures, and standards meet the highest levels of excellence. Why choose OnSecurity for your internal infrastructure pentesting?
- CREST-certified: Our services are externally verified, ensuring thorough and reliable testing.
- Expert professionals: Our team consists of CREST-certified testers, skilled in rigorous industry evaluations.
- Hands-on testing: We prioritise manual testing to uncover vulnerabilities that automated tools might overlook.
Trust OnSecurity for thorough, expert-led protection of your internal network.
Internal network security challenges
Securing your internal infrastructure presents unique challenges that require specialised knowledge and proactive measures:
Insider threats
Internal users can inadvertently or maliciously compromise the network.
Complex attack vectors
Cybercriminals may combine multiple vulnerabilities across systems to infiltrate the network.
Evolving threats
Attack techniques constantly evolve, necessitating regular assessments to stay secure.
Quick, high-quality pentests
Discover why our user-friendly platform and consultative approach make pentesting hassle-free.
Instant quote and booking
Get a 60 second cost estimate with our user-friendly instant quote tool.Platform access
No lengthy scoping process. Book your test directly through our platform or connect with our sales team for personalised assistance. Manage all communications via the platform and integrate workflows for notifications.Real-time testing
Get progress notifications through workflow integrations. Communicate directly with testers through in-platform comments.Immediate reports
Access findings in real-time through our platform. Generate PDF reports at any time with options for high-level summaries or detailed technical information. No waiting.Free retests
We retest any findings you’ve fixed without charge within a flexible window of the test completion date.Continued access
Ongoing attack monitoring year round. Sign up to Scan and Radar tools to continuously monitor through automated vulnerability scanning and gain situational awareness with threat intelligence.
Other types of penetration testing
Find the penetration test to best suit your business and cybersecurity needs.
Frequently Asked Questions
What is penetration testing?
Pentesting, also known as penetration testing, is a critical security practice where a security professional adopts a hacker’s mindset to identify security issues in an organisations IT infrastructure. Penetration testing simulates real-world hacking activities, comprehensively evaluating your digital defences. By engaging in pentesting, businesses can uncover and remediate vulnerabilities before malicious hackers exploit them.
What’s the difference between manual and automated pentesting?
Automated pentesting and vulnerability scanning relies on software tools to quickly assess for known vulnerabilities. Manual pentesting uses experts to identify complex vulnerabilities, tests in real-time and uncovers subtle issues that automated tools might miss. We believe in manual-first testing, and investing in developing talent through a structured and rigorous training programme. That's how we keep the quality of our tests so high.
Do I need a penetration test?
A penetration test is the best way to know for sure if your organisation is an easy target for hackers. The test will show you both how strong your cyber defences are, but what the potential outcomes of a breach could be. It can also ensure compliance with security regulations and enhance customer trust through demonstrated security commitment. Recent research reveals that the average breach now costs $4.35 million, with global cybercrime expenses projected to surge by 23% annually. By 2027, these costs could reach a staggering $23.84 trillion per year. This alarming trend underscores the critical need for robust cybersecurity measures. Penetration testing is a vital cyber security solution. As cyber attacks grow more sophisticated and frequent, proactive testing of your defences becomes even more important. Safeguard against potential breaches and avoid devastating financial impacts. Implementing pentesting services is no longer optional – it’s a necessity for many businesses seeking to protect their assets and reputation.
What should I get pentested?
All types of computer systems, networks, applications, and devices that are used to store, process, or transmit sensitive data should be tested. This includes web applications, mobile applications, wireless networks, cloud-based systems, and IoT devices. The scope of the penetration test should be determined by the organisation's risk assessment and compliance requirements. It's important to test all systems and applications that have access to valuable data to ensure that they are secure and protected against potential attacks.
How much does a pen test cost?
The cost of a penetration testing service can vary depending on the scope, duration, and complexity of the project. Generally, factors that can affect the cost of a penetration test include the number of systems to be tested, the depth and breadth of the testing, the type of testing required (e.g., web application, network, mobile), and the level of reporting and follow-up support needed. Our transparent, hourly billing means that everybody pays the same rate, and we quote to the nearest hour, not the nearest day. If you are interested in obtaining a quote for a penetration test, you can get an instant quote from our quote builder.
What's the difference between vulnerability scanning and pentesting?
A vulnerability scan is done using an automated tool to sweep your systems for known vulnerabilities. Penetration testing is a highly skilled, manual process in which a tester finds and attempts to exploit a vulnerability. Find out more about our efficient vulnerability management tool and start your 14 day free trial.
How many scoping questions do you ask? / How do you scope a pentest?
OnSecurity requires just two simple scoping questions to determine the scale of your test. We then use an algorithm to generate you an estimated quote in just a few clicks.
Are your pentests disruptive? Can I continue working while the test is being done?
Our tests are carried out in a safe and controlled manner by experienced testers, so you can continue with work as normal. We tell you about the security issues we find in real-time, so you can fix them before criminals have a chance to exploit them.
Can I speak to my tester directly?
Yes! You can chat directly to your tester in-platform or via Slack during the test.
How can I be sure my test is cost effective?
OnSecurity works in hours, not days, so you get a quote based on the actual time your test will take, without any padding or rounding up to the nearest day. Plus, we report as we go - so no waiting around while a tester spends days writing up a report before you can action any findings.
When will I be notified of findings?
Our testers report in real time as they test, so you can get notified immediately when something is found, instead of having to wait until the test is complete and a report written up.
Do you offer free retesting?
Yes! OnSecurity will retest any findings you've fixed for free, just book them in directly through our platform within 7 days of the test completion date.
How long does a pentest take?
How long a test will take will depend on the size of your target and its function. We ask 2 simple scoping questions to gauge the complexity of your environment which then informs the time we think it will take to test.
What if I need to cancel or reschedule a test?
No problem! We know that things don't always go to plan, so we don't charge you any fees to cancel or reschedule a test.