OUR SERVICES
Application Testing
Cyndicate Labs delivers application testing services that help organisations identify, understand and remediate security weaknesses across modern software environments.
Applications are often the primary way customers, staff and partners interact with your organisation. They process sensitive data, enforce access controls, connect to APIs, integrate with cloud services and support critical business operations. When application security fails, the impact can be significant.
Our application testing combines manual expertise, structured methodology and real-world attack knowledge to assess web applications, mobile apps, APIs, cloud-hosted applications, thick clients, thin clients and supporting backend services.
Whether you are launching a new application, updating an existing platform or looking for assurance across a complex software estate, Cyndicate Labs provides clear findings, practical remediation guidance and business-focused reporting
What is application testing?
Application testing is the process of assessing software for security weaknesses, design flaws, configuration issues and implementation errors that could be exploited by an attacker.
In a cyber security context, application testing looks at how an application handles authentication, authorisation, data access, input validation, session management, file handling, business logic, API communication, encryption and integration with wider systems.
The goal is to understand whether weaknesses could allow unauthorised access, data exposure, account takeover, privilege escalation, transaction manipulation or compromise of the underlying environment.
Application testing can be performed against many types of software, including web applications, mobile applications, APIs, cloud applications, desktop applications, thick clients and thin clients.
When to use application testing
Application testing should be used whenever software is being built, changed, launched or relied upon to handle sensitive data or business-critical processes.
Organisations commonly commission application testing before a public launch, after a major feature release, during secure development programmes, ahead of compliance assessments or when onboarding new software suppliers.
Testing is also valuable after architecture changes, API changes, cloud migration, authentication updates, payment integration, new role-based access controls or changes to data processing workflows.
For mature organisations, application testing can form part of an ongoing assurance programme, helping development, security and risk teams validate that applications remain secure as they evolve.
Our application testing services
01
Mobile application testing
Assess iOS and Android applications, mobile APIs, authentication flows, local storage, device permissions and backend integrations for vulnerabilities that could expose users or data.
02
Web application testing
Identify security weaknesses in websites, customer portals, internal platforms, APIs and browser-based applications, including access control flaws, injection vulnerabilities and insecure business logic.
03
Software application testing
Test desktop applications, thick clients, thin clients and internally developed software for vulnerabilities affecting authentication, data storage, client-server communication, privilege controls and local security boundaries.
04
Cloud application testing
Assess applications hosted in cloud environments, including identity integrations, storage permissions, API exposure, serverless components, containerised services and cloud-native misconfigurations.
Who can benefit from application testing?
Any organisation that develops, deploys or relies on software can benefit from application testing.
For software companies and SaaS providers, application testing helps protect customer data, support secure development and provide confidence before release. For financial services, government, defence, healthcare, retail and regulated organisations, it supports assurance over applications that handle sensitive data or critical workflows.
Internal business applications also benefit from testing. Many high-risk weaknesses exist in internal portals, administrative tools, reporting platforms, thick client applications and integrations that were never designed to be exposed to modern attack techniques.
Application testing is particularly valuable for organisations with customer-facing platforms, APIs, payment flows, user accounts, sensitive data, complex permissions or integrations with cloud and third-party services.
Choosing the right type of application testing
The right type of application testing depends on the application, its architecture and the risk you need to understand.
If your application runs in a browser, web application testing is usually the right starting point. This can include portals, dashboards, APIs, admin panels, customer platforms and internal web applications.
If your application runs on iOS or Android, mobile application testing can assess the app, mobile API, local storage, authentication, transport security and platform-specific risks.
If your application is installed on desktops or uses a client-server architecture, software application testing may be more appropriate. This can include thick client applications, thin clients, internal tools and proprietary enterprise software.
If your application is hosted in or deeply integrated with cloud services, cloud application testing can assess risks across identity, storage, APIs, serverless components, containers and cloud permissions.
Cyndicate Labs can help you choose the right assessment based on your application type, technology stack, data sensitivity, user base and business objectives.
Why choose Cyndicate Labs for application testing?
Cyndicate Labs combines deep application security expertise with accredited penetration testing capability and real-world offensive security experience.
Our consultants understand how attackers exploit applications in practice, from simple input validation issues to complex business logic flaws, authentication weaknesses, API abuse and chained vulnerabilities across modern software environments.
We provide clear, practical reporting that helps development teams remediate efficiently and gives security, risk and product stakeholders confidence in the application’s security posture.
01
Manual testing expertise
Our application testing is led by experienced consultants who use manual analysis to identify vulnerabilities that automated tools often miss.
02
Secure development insight
We help teams understand root causes, improve secure development practices and reduce the likelihood of similar issues being introduced in future releases.
03
Real-world vulnerabilities
We focus on vulnerabilities that matter in practice, including authentication flaws, access control issues, insecure APIs, business logic weaknesses, data exposure and injection risks.
04
Platform-specific knowledge
Our team tests across web, mobile, cloud, thick client, thin client and API-driven environments, applying the right techniques for each platform.
05
Actionable remediation
Findings include practical guidance for developers, engineers and security teams, helping you fix issues quickly and effectively.
06
Standards-aligned testing
Testing can be aligned with recognised security frameworks and methodologies, supporting assurance, compliance and secure development requirements.
Get in touch with our cyber security experts
Speak to Cyndicate Labs about application testing for web applications, mobile apps, APIs, cloud-hosted platforms, thick clients, thin clients or complex software environments.
Our experts can help you choose the right assessment, scope the engagement and deliver practical findings that reduce application security risk.
Client Testimonials
As a CISO, our chosen partners’ professionalism and quality are paramount. I aim to work with what I believe to be the best in the industry and with that in mind, I am more than happy to fully endorse the services Provided By Mitchell, Daniel and Paula at Cyndicate Labs.
As a Professional Virtual/Fractional CISO, the partners I bring into client environments are a direct reflection of my own reputation and standards. I have exceptionally high standards and am extremely selective about who I recommend. I can say with absolute confidence that I am proud to work with Cyndicate Labs and to introduce them to my clients.
I have worked with Paula and Mitch before on a red team and various penetration testing agreements during my time at [Insurance Company] between 2018 and 2022 and due to the positive and mutual respectful relationship formed, was delighted to continue to work with them.