Security Testing of Mobile App & Internal Network

Client:

The private investor in Ukraine’s energy sector

Industry:

Energy

Focus:

Security assessment of mobile applications and network infrastructure as part of the annual audit

Main challenge:

Identifying potential vulnerabilities that could lead to data leakage

Market:

Local (Ukraine)

Services provided:

Mobile app pentesting, infrastructure pentesting

Key Takeaways

Simulated attack via public Wi-Fi to expose real-world risks

Identified critical issues across app, API, and infrastructure

Gray-box and white-box penetration tests were conducted using both automated and manual methods

A report was prepared with recommendations to strengthen cybersecurity

strategies used for penetration testing

< 5

weeks total testing time

A report

with recommendations was prepared

Security Testing of Mobile App & Internal Network

Mar 7, 2025

How can you be sure your critical infrastructure is truly secure? Penetration testing is one of the most effective ways to verify it in practice. During a scheduled security assessment, Datami specialists discovered several vulnerabilities in the client company’s mobile applications and internal infrastructure. Thanks to the penetration test, a potential data breach was prevented.

A major energy corporation in Ukraine operates across the full energy cycle: generating electricity from solar, wind, and thermal power plants; extracting coal and gas; engaging in energy trading; distributing electricity; and developing a nationwide network of charging stations.

The company operates in the field of critical infrastructure, processes confidential personal and corporate data, and complies with regulatory requirements, making information security a strategic priority.

Tasks and challenges

Datami was engaged to conduct a scheduled penetration test of mobile applications and internal infrastructure as part of an annual security assessment. The objective was to identify potential threats to digital assets that process confidential information and to provide technical recommendations for strengthening the protection of critical infrastructure.

Conduct gray-box penetration testing of mobile applications for clients and employees
Test the internal network (white-box), including Wi-Fi, with a focus on access policies
Provide a technical report with findings and recommendations to mitigate risks

Web pentest + mobile pentest

Gray-box testing with user and administrator accounts

Infrastructure pentest

Review of network restrictions, access controls, and security configurations

Report and recommendations

Document with identified risks and recommendations for mitigation

Datami Methodology: Security Assessment of Critical Infrastructure

Our approach

A combined penetration test was conducted using both gray-box and white-box approaches. We applied both static and dynamic analysis, combining manual and automated methods. Constant communication with the client was maintained, as unstable application performance complicated the testing process.

During testing, the team managed to bypass corporate network restrictions and discovered Wi-Fi access through an unprotected device. This made it possible to demonstrate real attack vectors.

White-box

Internal infrastructure testing with access to network configurations and policies

Gray-box

Mobile application testing using administrator and user accounts, without full access to the source code

Key work stages and solutions

The Datami team first conducted static and dynamic testing of the mobile applications, followed by an assessment of the company’s internal infrastructure, with particular focus on the Wi-Fi network and access policies. During the process, the team had to adapt to technical issues with the applications and clarify testing scenarios.

Preparation

Analysis of initial data, access levels, and testing scenarios; selection of tools for mobile and network testing
Security testing

Gray-box testing of mobile applications and white-box assessment of Wi-Fi and internal network; network restriction bypass; detection of configuration vulnerabilities
Analysis and reporting

Preparation of a technical report detailing critical and medium vulnerabilities, along with recommendations for mitigation

Fewer critical risks — more confidence

Results and recommendations

During the security assessment at , the Datami team identified several critical, as well as a number of medium and low vulnerabilities in mobile applications and internal infrastructure. Some of the risks were related to network access and security policy configurations. During the testing process, our penetration testers also noted issues in application functionality.

As a result, the client received a detailed technical report and a recommended action plan, including:

Remediation of vulnerabilities in mobile applications
Restriction of Wi-Fi access and protection of public devices
Review and update of network access policies
Strengthening control over internal privileges

After implementing the recommendations, a reduction in the risk of data leakage and unauthorized access is expected.

Key project results

As a result of the collaboration with Datami, the organization received a detailed technical report, an assessment of the security level of its mobile applications and network infrastructure, and recommendations for vulnerability remediation.

The testing was completed within the planned timeframe — 4–5 weeks.

This case study confirms the importance of regular penetration testing for critical infrastructure companies — both for security control and regulatory compliance.

Direction

Before the project

After implementation

Security status

Limited visibility into mobile applications and the network

A number of critical, medium, and low vulnerabilities identified; remediation plan developed

Critical vulnerabilities

Not previously detected or considered

Identified during the penetration test

Wi-Fi access

Public devices could store confidential passwords

Recommended to restrict access and review interaction points

Security compliance

Partial compliance with expectations

Improved transparency and access control

Timeline

Planned — 4–5 weeks

Completed on time, including additional checks

Preparation of the Platform for Regulatory Audit

The risk of KYC bypass was reduced from high to low.
A rate limit and an AI module for deepfake detection were implemented.

Services:

API, web, and mobile application pentest (Gray-Box)

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The code was prepared for certification.
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Services:

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Risk level reduced from medium to minimal

Services:

Smart contract audit (White-Box source code analysis)

Sep 2, 2025

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