Network PenetrationTesting

Penetration test is a deep network testing performed by experienced and certified specialists in this field. ESKA cybersecurity experts have a wide range of skills, experience and conduct both internal and external penetration tests to identify all kinds of vulnerabilities and fix them. Regular penetration testing allows your organization to keep cybersecurity up to date and protect assets from intruders.


Types of network penetration testing

Network penetration testing can be performed from two perspectives: inside and outside your organisation’s network perimeter.

Internal network penetration testing

An internal network test is performed to accurately assess how much damage attackers can cause if they manage to get inside the network. In addition, an internal pentest allows you to identify threats that may come from employees, regardless of whether these actions are intentional or not.

External network penetration testing

External network testing is essential to verify the effectiveness of perimeter cybersecurity and to prevent and detect attacks. In addition to this, weaknesses in resources that are connected to the Internet are identified.

Why is pentest necessary for your organization?

Penetration test allows you to identify vulnerabilities in your enterprise infrastructure. Since all organizations connect to the Internet and other external systems to work, this allows attackers to invade your network. If the security system is built with errors, or the infrastructure itself has vulnerabilities, criminals can use them to access the network and cause damage to the organization. In some cases, this can have a disastrous effect.

Vulnerabilities detected during penetration testing

Qualified experts from ESKA can check and test vulnerabilities in all types in different infrastructure directions.

    Configuration of the cybersecurity system
    Software errors
    Firewall operation

    Weak encryption protocols
    Errors in systems
    Cybersecurity in general, security tools and the adequacy of their use

Why do you need to choose ESKA for your pentest? 

Still have some hesitations whether cooperation with us is worth the trouble? Check 10 reasons why you should choose us among other companies!


We have 8+ years of experience in the Cybersecurity market.


We have certified experts who are ready for the most difficult challenges.


We are trusted by more than 200 companies (including Governments and international corporations).

Up to date

We always discover the cyber security market and use the most modern technics and tools.

Team work

We are the team and we always work shoulder to shoulder that's why we are flexible and scalable.


ESKA that's not just a contractor it is your partner, that's why we are always ready to help in the future. If it's needed we can provide a developer who can fix your vulnerability. We always focused on the relationships and on the customer success!


We don't provide just a report with an incomprehensible list of issues. We always manual check the vulnerability and explain in what way and how to close it, give road map and recommendations.


We are Ukrainian company - Ukraine today faced with the most strong cyberwar and in this war, we are getting the best experience.

Clients that secure with ESKA


Workflow how our white hackers work

A penetration test is usually roughly divided into five phases:

Phases 2 - 4 are usually repeated several times.The actual penetration test usually begins with a tool-based scan of the network.

Methodologies we use

  • Stage 1. Preparation

    Research of all artifacts and resources related to the customer (domain names, IPs, 3d party resources) including from Darknet.Сoordination of test objectives, scope, test methods, and devices.

  • Stage 2. Scanning phase

    At this stage, we are looking for open paths to computers and resources. The system is "touched" for the first time. Here we are attempting to obtain information from different sources.

  • Stage 3. Enumeration

    This phase often runs at the same time as stage 2. Its goal is to get real, useful information through the security check. To carry out the attacks successfully, it is necessary to obtain the most accurate information possible about the system. At this stage, we search for suitable exploits, conduct detailed network analysis, hash cracking, and coordinate further attacks.

  • Stage 4. Exploit phase

    The vulnerabilities found must now be exploited to carry out real attacks on the system. In this way, existing security gaps and weak points are revealed. Here we conduct the verification tests (exploitation of vulnerabilities, circumvention of security measures and active intrusion, man-in-the-middle attacks, post-exploitation, etc.)
    Then we repeat levels 2 to 4.

  • Stage 5. Evaluation and reporting

    To be able to realistically assess the actual security situation, a detailed and comprehensive report is necessary. Management can derive appropriate measures from the management reports to achieve proper IT security. During the final analysis, we evaluate and document the results, make the summary and presentation, and listing of weak points, and give recommendations for countermeasures.

  • Stage 6. Post-implementation review

    We will provide specific recommendations for your further actions required and support you in their implementation if needed. We will check all corrections and improvements to make sure that our recommendations work in right way.

What do you get in the result?

How secure computer systems and networks are can only be found out through realistic IT penetration tests, which reveal all possible gaps. After we complete a penetration test, we would uncover your security gaps before the hackers get to exploit them. As a result:

    You will receive an assessment of the vulnerabilities found according to their risk.
    IT security would be either increased or confirmed – from a technical and organizational point of view.

We will discuss specific recommendations for your further actions required and support you in the further procedure even after the review.


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