Web Application Penetration Testing

Deep-dive, manual network penetration testing performed by experienced and certified penetration testers. ESKA's team of cybersecurity experts have experience in performing web application security testing and website security testing that helps your organisation to identify and eliminate a wide range of risks.


Types of web application penetration testing

The two main types of web app penetration testing are internal and external.

Internal web application penetration testing

This testing focuses on identifying potential vulnerabilities within the organization's firewall on web apps hosted on the intranet. Ethical hacking is executed using invalid credentials to access the system and determine the potential damage and route of a possible attack.

External web application penetration testing

This type of penetration testing focuses on external attacks on the web applications hosted on the internet. Ethical hackers (pen testers) simulate external attacks using the IP address of the target system, the front and back-end servers, and other web apps hosted on the internet using blind testing, double-blind and targeted testing.

Why do you need Web Application Penetration Testing?

The objective of web application penetration testing is to identify security issues resulting from insecure development practices in the design, coding and publication of software. Applications are a vital business function for many organisations, used to process payment card data, sensitive personal data or proprietary data. 

Web application vulnerabilities

Pentest includes assessing applications for vulnerabilities listed in the OWASP Top 10, the Open Web Application Security Project’s ten most critical application security risks. The ESKA cybersecurity team will help to identify vulnerabilities including:

    Injection flaws
    Authentication weaknesses
    Poor session management
    Broken access controls

    Security misconfigurations
    Database interaction errors
    Input validation problems
    Flaws in application logic

Сheck whether your website needs a pen test.

Validate your website’s current security status for free.

Scan your website to get confirmation of its security level. It will identify gaps and vulnerabilities in your website’s security system. Just a few clicks can get you an answer to the main question - Do we really need a penetration test?

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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