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Whether launching a new app, undergoing digital change, or seeking reassurance, our CREST-approved testing ensures resilience against evolving threats.
Businesses rely on applications like web portals, mobile apps, APIs, and internal systems. However, these are common targets for attackers. That’s why our CREST-accredited testing identifies and helps fix vulnerabilities before they can be exploited, keeping your systems secure.
As an award-winning, CREST-approved penetration testing service provider, you can trust not only our credentials but also our proven methodology. In addition, we bring industry-leading expertise to reliably uncover and address vulnerabilities in your IT infrastructure.
Our experienced penetration testers deliver industry-leading expertise backed by hundreds of genuine 5-star reviews. We tailor each assessment to your needs, ensuring reliable, high-quality results. With Assure Technical, your security is in safe hands.
We combine manual testing with smart tools to simulate real-world attacks tailored to your app and business context. In addition, we detect logic flaws and misconfigurations often missed by automation, providing clear, prioritised insights for effective remediation.
Applications are central to modern business, but greater functionality and connectivity mean increased cyber risk. Whether handling data, processing transactions, or integrating third-party services, even one missed vulnerability can have serious consequences.
Here are six compelling reasons why regular application penetration testing should be a core part of your cyber security strategy.
Applications are often complex, with various components and user roles. Therefore, testing is crucial to uncover issues like injection flaws, insecure APIs, or misconfigured permissions before attackers exploit them.
A breach of personal or financial data can severely and permanently damage your reputation. However, regular testing helps prevent this by ensuring your applications meet data protection standards. As a result, you not only reduce risk but also reassure customers their information is secure.
From GDPR and ISO 27001 to PCI DSS and Cyber Essentials Plus, application testing helps demonstrate that you're actively managing cyber risk and meeting your regulatory and contractual obligations.
Security issues become more costly and complex to fix later in the development process. Therefore, early testing is essential to integrate security into your SDLC. As a result, teams can learn from findings, adapt their approach, and build more resilient software from the start.
Cyber attacks can lead to severe financial damage, including incident response costs, lost revenue, and potential legal action. However, regular testing helps prevent breaches before they occur. Consequently, this reduces the risk of business disruption, regulatory penalties, and reputational harm.
Internal development and QA teams may unintentionally overlook security issues due to familiarity or time pressures. As such, independent testing provides an objective assessment of your application’s resilience. In turn, this boosts stakeholder confidence in your organisation’s overall cyber maturity.
Application penetration testing targets specific risks across web, mobile, API, and cloud environments. Each type plays a crucial role in identifying vulnerabilities and strengthening your defences. Understanding these methods helps ensure your applications are secure, compliant, and resilient against evolving threats.
Focuses on identifying vulnerabilities in websites and online portals. It helps prevent attacks like SQL injection, XSS, and authentication flaws.
Targets security weaknesses in iOS and Android apps. This ensures data protection, secure API calls, and safe user interactions on mobile devices.
Examines exposed APIs for insecure endpoints and data leaks. It’s crucial for protecting system integrations and preventing unauthorised access.
Assesses cloud-hosted apps and configurations. It helps uncover misconfigurations, access control issues, and data exposure risks in cloud environments.
This testing identifies security flaws in locally installed software, such as desktop apps or browser plugins. Moreover, it highlights risks from local access or user interaction often missed in server-side testing.
This proactive approach analyses code to uncover hidden vulnerabilities early. In addition, it strengthens security from the ground up and supports secure development throughout the software lifecycle.
In today’s digital era, cyber breaches are inevitable; posing significant operational, financial, and reputational threats to your business.
Importantly, penetration testing is amongst the most effective strategies to bolster your cyber security defences.
Download a complimentary copy of our comprehensive guide today. It covers all you need to know about penetration testing, enabling you to make an informed decision on how it could benefit your business.
Application penetration testing isn’t just for tech companies – it’s essential for any organisation that relies on software to serve, support, or protect its users.
In the UK, web application penetration testing typically costs £750–£1,500 per day, depending on complexity. A small application may take 2–3 days to test, while multi-role or API-based systems often require a week or more. At Assure Technical, we provide fixed-price quotes that include a free confirmatory check. With 43% of UK businesses reporting a cyber breach (Source:2025 UK Cyber Breaches Survey), investment in regular testing is a prudent business decision.
Most web applications can be tested in 2–3 days, but complex or API-driven platforms often take 5–7 days. Lead times are typically 2–4 weeks across the UK, although urgent engagements can sometimes be prioritised. At Assure Technical, we also offer out-of-hours testing, enabling us to work around maintenance windows and business hours to minimise any disruption. For broader resilience, many organisations combine this with our Infrastructure Penetration Testing.
Testing covers authentication, authorisation, session handling, input validation, configuration weaknesses, and exposed API endpoints. At Assure Technical, assessments follow a CREST-approved methodology, which ensures a structured and consistent approach aligned with industry best practice, mapped against the OWASP Top 10 to provide clear visibility of the most critical web application risks. Moreover, you will receive remediation advice written for both developers and security managers, along with confirmatory checks post remediation.
We follow the OWASP Web Security Testing Guide (WSTG) and align results to OWASP ASVS levels, offering structured assurance. Findings are also categorised under the OWASP Top 10, providing internationally recognised coverage. Importantly, all tests are manual and risk-driven, not just automated scans. This ensures findings reflect real-world threats rather than generic tool outputs. For full-spectrum assurance, many clients combine this with Social Engineering testing.
The Application Security Verification Standard (ASVS) sets out three levels of assurance:
At Assure Technical, we can map results to your required ASVS level. This ensures your penetration test aligns with globally respected security benchmarks.
Our user friendly reports include an executive summary for leadership, a technical breakdown with reproducible steps, prioritised remediation guidance and free confirmatory checking. We also hold a wash-up session to ensure all findings are clearly understood. This means your organisation is not only secure but also prepared for compliance audits such as ISO 27001 or PCI DSS.
At Assure Technical, we recommend the most suitable model based on your threat profile and compliance requirements. Many clients choose grey-box for its balance of realism and efficiency.
Application penetration testing validates secure coding practices and access controls, while also supporting frameworks such as ISO 27001, PCI DSS, and GDPR. Moreover, at Assure Technical, we structure our reports to provide clear evidence that stands up in compliance audits. Finally, this testing demonstrates to regulators and clients that your organisation takes proactive steps to protect sensitive data.
We’re technical security experts, but we’re people first. We’re here to help make security simple.
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