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Web Application Penetration Testing Services

Check your web application for vulnerabilities - order pentesting and improve security.
  • 400+
    pentests conducted
  • 78
    attacks repelled
  • ≈15
    vulnerabilities per project
8 years
of practice
5 continents
covered
34 countries
involved
WEB SECURITY HARDENING SERVICES
Professional web application pentesting

Web app pentesting by Datami is a safe simulation of real cyberattacks performed by certified ethical hackers.
We assess how well your application is protected in the browser, on the server side, and during API interactions. This service helps reduce risks, prevent incidents, and meet security requirements.

  • Identifying existing vulnerabilities
    Pentesting helps identify weak spots in web applications that could be exploited. You’ll know in advance what needs to be fixed to protect your data.
  • Expert assessment of security level
    You receive an objective technical evaluation of your web application’s security from experienced professionals. This supports informed decisions about further protection.
  • Comprehensive web application assessment
    We analyze all critical app components: authentication, access controls, business logic, API, and session security. This helps detect both technical and logical threats.
26
cybersecurity
certificates
600+
successful projects
delivered
84
tools
for security checks
78%
client return rate
(CRR)
SUCCESSFUL COLLABORATION EXPERIENCE
Our project case studies
LenaviPro LenaviPro
LenaviPro: HIPAA Compliance via Pentesting
Financial institution Financial institution
Banking Security Audit Across Digital Channels
Consulting Company Consulting Company
Security Audit of Banking Web, Mobile & API Systems
DAVINTOO UKRAINE DAVINTOO UKRAINE
DAVINTOO: LMS Audit for HIPAA Compliance
Grindset SoftWare Grindset SoftWare
Payment System Security Testing for PCI DSS
Fraudline Fraudline
Security Testing of a Whistleblowing Platform
Brokerage company Brokerage company
Stability and Security for Real-Time Trading
View all cases
Our clients
Paybis
cpay
banxe
friend
montify
liminal
getida
Solvd
Andromeda
Invictus
Cloverpop
Antosha
What a web application pentest covers

A web application is more than just a website - it’s a system with interactive logic, authorization, databases, and external integrations. During penetration testing, we examine all critical components of the application, from the frontend to backend logic and APIs.

Our pentesters check how authorization, roles, business logic, and data interaction work, identifying even the smallest vulnerabilities that could be exploited during an attack.

  • User logic and role validation. We analyze access scenarios, role distribution, and application behavior in edge cases. This helps uncover logical flaws that scanners may miss.
  • API and external service attacks. We test all integration points with APIs, third-party services, payment gateways, and storage systems. We assess how well data is protected in inter-module exchanges.
  • Frontend as a risk source. We examine the client side: JavaScript code, request parameters, browser security policies. We detect XSS, token leaks, and interface restriction bypasses.
  • Need more information about the web app pentesting service?
    Contact us - we’ll answer technical and organizational questions for free and guide you on where to start.
Our certificates
Advantages of web app pentesting by Datami
EFFECTIVE CYBERSECURITY SERVICES
Advantages of web app pentesting by Datami

Web application pen testing by Datami is not just about finding weak spots - it’s a step toward real resilience of your digital services. It’s a practical tool for strengthening cybersecurity across companies of various industries and scales. We tailor it to your architecture, provide support, and ensure full confidentiality throughout the process.

Here are the main advantages of our web application penetration testing:

  1. Compliance documentation. Datami reports are prepared in accordance with international standards (ISO 27001, PCI DSS, SOC 2).
  2. Free retesting. After threats are fixed, we recheck your web applications at no extra cost.
  3. Risk descriptions. You receive technical explanations of each vulnerability and its potential impact on your business and users.
  4. Actionable recommendations. We provide clear steps to eliminate threats and boost security
APPLICATION SECURITY TESTING REPORTING
Web application pentest report
After penetration testing your web applications, you will receive a structured document describing identified vulnerabilities, risk levels, and recommendations for mitigating threats. The report includes technical details for the IT team and an executive summary for management - everything needed for further action and security planning.
Penetration testing report
A document that includes descriptions of discovered vulnerabilities and guidance on strengthening security.
SECURITY TESTING STANDARDS BY DATAMI
Our approach to web application pentesting

Datami is a team of professionals operating in over 30 countries worldwide. We follow international testing methodologies, combine automated and manual techniques, coordinate all stages with the client, and act strictly within agreed scenarios. We provide support during the remediation of vulnerabilities.

Black-box
1. Focus on results

We don’t just perform pen testing - we help eliminate threats. Our priority is a practical impact on the security of your business.

Gray-box
2. Certified specialists

Our team includes experts with international certifications such as OSCP, CISSP, CEH, Security+, and hands-on experience in real-world attacks.

White-box
3. Flexible approach

We analyze your specifics and create a test plan based on the logic, roles, and architecture of your particular web application.

TRUSTED STANDARDS
Methodologies and tools for web application pentesting
To test the security of web applications, we use leading global frameworks and modern penetration testing tools. This allows us to detect critical vulnerabilities with high accuracy and comply with international security standards.
A web application security assessment framework based on the OWASP Top 10
A web application security assessment framework based on the OWASP Top 10
A penetration testing execution standard: information gathering, attacks, reporting
A penetration testing execution standard: information gathering, attacks, reporting
An IT framework that aligns pen testing with corporate governance
An IT framework that aligns pen testing with corporate governance
A tool for automated vulnerability scanning
A tool for automated vulnerability scanning
An approach for collecting open-source intelligence before pen testing
An approach for collecting open-source intelligence before pen testing
A network scanner used to detect open ports, services, and network topology
A network scanner used to detect open ports, services, and network topology
One of the most powerful tools for manual security testing of web applications and APIs
One of the most powerful tools for manual security testing of web applications and APIs
A methodology from NIST for planning, conducting, and documenting security tests
A methodology from NIST for planning, conducting, and documenting security tests
A comprehensive framework for operational security testing of systems, people, and networks
A comprehensive framework for operational security testing of systems, people, and networks
TRUSTED WITH SECURITY
Client reviews
Real reviews from companies that ordered pentesting from Datami are the best proof of our expertise.
On the Clutch platform, you’ll find independent client evaluations from those who have already used our digital security testing services.
We are grateful for every opinion and the high appreciation of our work!
WHAT RISKS DOES PEN TESTING IDENTIFY
Most common web application vulnerabilities
01.
Injection (SQL, NoSQL, Command)
A vulnerability that allows malicious commands to be injected into database queries or executed on the server.
example_1
02.
Cross-site scripting (XSS)
Execution of third-party code in the user’s browser to hijack sessions, modify content, perform redirects, etc.
example_2
03.
Broken access control
Improper rights restrictions allow attackers to view, modify, or delete others’ data without authorization.
example_3
04.
Weak authentication
Weak passwords, login bypass, token issues, or password reset flaws can give attackers full access to accounts.
example_4
05.
Vulnerable business logic
Flaws in workflows (e.g., payments or subscriptions) allow users to gain unauthorized advantages by bypassing rules.
example_5
06.
Insecure API
Unsafe or unvalidated APIs can expose data or allow manipulation via IDOR (Insecure Direct Object References).
example_6
07.
Misconfigurations
Open admin panels, test pages, weak security headers, or active debug mode give hackers extra opportunities.
example_7
08.
Insecure token and session handling
Unstable sessions, improper JWT storage, lack of CSRF protection, or session fixation (Session Fixation) vulnerabilities.
example_8
09.
Vulnerable dependencies
Outdated libraries, plugins, or CMS with known vulnerabilities that are not updated - a direct path to system compromise.
example_9
Additional pentesting services by Datami
Here are more services
01.External penetration testing
02.Internal penetration testing
03.Network penetration testing
04.Cloud penetration testing
05.Infrastructure pentesting
06.Mobile application pentesting
07.Blockchain pentesting
08.API penetration testing
09.AWS penetration testing
10.GCP penetration testing
11.Azure penetration testing
12.Objective-oriented pentesting
13.CheckBox penetration testing
14.Advanced penetration testing
15.Wireless network (Wi-Fi) pentesting
16.White-box pentest
17.Black-box pentest
18.Gray-box pentest
FAQ

We test all key components: the client side (frontend), server logic (backend), API, and the mobile version if it uses the same servers. We assess authorization, user roles, business logic, session management, database interactions, and other critical areas.

The scope of application testing is agreed upon during the preparation stage. It’s possible to limit the pentest to specific modules, functionality, or individual components (e.g., API or authentication).

No. This kind of web application testing does not affect performance or service availability - we coordinate activity windows, do not alter data, and do not impact real users.

Testing is conducted by ethical hackers using approved scenarios. All actions are confidential, access is secured, and data leaks are excluded.

Duration depends on complexity and scope - typically 5 to 10 business days. Web application penetration testing is recommended annually or after releases or logic changes.

The price depends on the size of the application, number of roles, access levels, and logic complexity. Contact us and we’ll provide a preliminary estimate after a short briefing.

Yes, one retest after vulnerability remediation is included in the price. We verify that the risks have been eliminated and update the report.

Yes, our reports are structured according to standards and are suitable for audits, compliance, tenders, and client-side security assessments.

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