Skip to content

Custom Application Penetration Testing Services

Custom Application Penetration Testing Services

Custom Application Penetration Testing Services

Secure Your Custom Applications with a Web App Pen Test

At Tanner Security Consultants, we understand that custom-built applications present unique security challenges. Our Custom Web Application Pen Testing services will identify vulnerabilities specific to your custom applications. We specialize in OWASP Penetration Tests to test your web applications against the most critical security risks.

Why Custom Application Penetration Testing is Important

Custom applications manage important business data like customer details, financial transactions, healthcare records, intellectual property, and internal operations. Attackers often go after custom software because it has unique features and security gaps that automated tools might not catch.

Modern applications are complex and often connect with cloud platforms, APIs, third-party services, mobile apps, identity providers, and external databases. These connections help businesses, but they also create more ways for attackers to get in if security is not carefully checked.

Tanner Security’s Custom Application Penetration Testing Services help businesses find weaknesses that could lead to unauthorized access, data theft, privilege escalation, account compromise, or service outages. Our consultants use real-world attack methods to see how well your application protects sensitive data.

Instead of just using automated scanners, we do thorough manual testing. This helps us see how attackers might use the application, take advantage of business logic, misuse workflows, and find weaknesses that automated tools often overlook.

What Is Custom Application Penetration Testing?

Custom application penetration testing is a security assessment designed to identify vulnerabilities within software applications developed specifically for a business. Unlike commercial off-the-shelf software, custom applications often contain proprietary functionality, unique workflows, and business-specific logic that require specialized testing techniques.

The objective of a penetration test is to evaluate the application’s security from an attacker’s perspective. Testers attempt to identify vulnerabilities that could allow unauthorized users to access sensitive information, manipulate data, bypass security controls, escalate privileges, or compromise underlying systems.

The assessment typically includes evaluating authentication mechanisms, authorization controls, session management, input validation, API security, business logic, encryption practices, and data protection mechanisms.

Because every application is unique, custom application testing requires a tailored approach that focuses on the application’s specific functionality, architecture, and risk profile.

Contact our Custom App Pen Testing Team

Why Custom Applications Require Specialized Security Testing

Many businesses think that secure coding and automated scanning are enough to protect their applications. While these are important, they often miss problems that come from complex workflows, business logic mistakes, or unexpected interactions between parts of the application.

Attackers don’t just look for known software bugs. They also try to find ways to misuse the application in ways developers did not expect.

For example, an attacker might change a workflow to get to data they shouldn’t see, skip approval steps, gain extra privileges, change transactions, or reach admin features. Finding these issues usually needs manual testing and insight into how attackers operate.

Custom application penetration testing finds weaknesses so businesses can fix them before attackers take advantage of them in real-world use.

Our Custom Application Penetration Testing Methodology

Every engagement begins with understanding the application’s purpose, architecture, user roles, authentication mechanisms, and business objectives.

Our consultants team up with developers, system administrators, and stakeholders to find important features, sensitive data paths, and any concerns. We then create a testing plan to check for both technical problems and business logic issues.

Testing may include evaluating user authentication, authorization controls, session management, input validation, API security, file upload functionality, encryption implementations, access controls, and integrations with external systems.

Besides finding vulnerabilities, we look at how attackers might use them and what impact they could have on your business. This helps you focus on fixing the most important risks, not just counting the number of issues.

After the assessment, we give you a detailed report with our findings, possible attack scenarios, business impact, advice on fixing issues, and suggested next steps.

We were fortunate to have collaborated with Tanner IT Security Consultants. From the outset, John’s team exhibited a remarkable depth of knowledge and a clear understanding of our specific requirements.  

Andy

Cost of Web Application Penetration Testing

The cost of web application penetration testing services depends on application size, complexity, and the number of user roles or interfaces tested. Smaller applications may require limited testing and can cost as little as $8,000-$15,000, while complex platforms with multiple integrations require deeper analysis and can cost $20,000-$75,000.

Tanner Security provides clearly scoped pricing based on your environment and testing requirements.

Common Vulnerabilities Found During Custom Application Penetration Tests

Custom applications often contain vulnerabilities that cannot be detected solely through automated scanning.

We often find issues like broken access controls, privilege escalation, insecure APIs, weak authentication, session problems, poor input validation, business logic flaws, and exposure of sensitive data.

We also frequently identify issues related to cloud integrations, third-party services, mobile application backends, and identity management platforms.

Most of these vulnerabilities happen because modern application development is complex, not because of carelessness. Still, if they aren’t fixed, attackers can take advantage of them.

Why Choose Tanner Security Consultants?

At Tanner Security Consultants, we have a team of highly skilled and certified professionals with extensive experience in penetration testing. Our experts understand the latest attack techniques, emerging vulnerabilities, and industry best practices. They stay up-to-date with the evolving threat landscape and leverage this knowledge to provide accurate and relevant assessments for our clients.

Benefits of Our Web Application Penetration Testing Services:

  • Identify Vulnerabilities: Our penetration testing services help identify vulnerabilities that may go unnoticed by traditional security measures, enabling you to address them before malicious actors exploit them.
  • Enhance Security Posture: By identifying weaknesses in your infrastructure, applications, and systems, we empower you to make informed decisions and prioritize security enhancements to fortify your defenses.
  • Compliance and Regulatory Requirements: Our testing services assist you in meeting compliance obligations (PCI, HIPAA, ISO 27001, NIST, and CIS) by identifying gaps and providing recommendations to align your security measures with industry regulations and standards.
  • Protect Your Reputation: By proactively identifying and addressing vulnerabilities, you can protect your brand reputation and customer trust and avoid potential financial and legal consequences from a data breach.

Contact us if you would like to learn more about our Custom Application Penetration Testing Services.

Start on Your Web App Pen Test Journey

Don’t leave your data and reputation vulnerable to cyber threats.

Related Services

Learn more:

Frequently Asked Questions – Web Application Penetration Testing Services

Web application penetration testing services include a comprehensive evaluation of your application’s security controls, authentication mechanisms, session management, input validation, and access controls. Testing also covers APIs, user roles, and business logic to identify vulnerabilities that could be exploited by attackers.

A vulnerability scan uses automated tools to identify potential security issues, while web application penetration testing involves manual testing to actively exploit those issues. Penetration testing provides a deeper understanding of risk by showing how vulnerabilities can be chained together and used in real-world attacks.

Web applications should be tested at least once per year. Additional testing is recommended after major updates, new feature releases, infrastructure changes, or when integrating third-party services. Regular testing helps ensure new vulnerabilities are identified and addressed quickly.

Common vulnerabilities include SQL injection, cross-site scripting (XSS), broken authentication, insecure direct object references, and misconfigured access controls. Many applications also contain logic flaws that cannot be detected through automated scanning alone.

Yes. Testing includes both unauthenticated (external user) and authenticated (logged-in user) areas. Authenticated testing is critical because it often reveals deeper vulnerabilities, including privilege escalation and data exposure risks.

Testing is performed in a controlled manner designed to minimize disruption. While certain techniques simulate real attack behavior, our team works closely with your organization to avoid impacting production systems or user experience.

The timeline depends on the size and complexity of the application. Most engagements are completed within one to three weeks, including testing, analysis, and reporting.

You will receive a detailed report that includes identified vulnerabilities, risk ratings, proof-of-concept evidence, and step-by-step remediation guidance. Reports are designed to be actionable for both technical teams and leadership.

Yes. We provide guidance to help your team address findings and can validate fixes once remediation is complete. Our goal is to ensure vulnerabilities are fully resolved, not just identified.

Yes. Our testing methodology aligns with industry standards such as the OWASP Top 10 and other widely accepted security frameworks. This ensures comprehensive coverage of the most critical web application risks.

Yes. Web application penetration testing supports compliance efforts for standards such as PCI Gap Assessments, SOC 2 Compliance, and ISO 27001 audits by validating security controls and identifying vulnerabilities that must be addressed.

We typically require application URLs, user credentials for testing, scope details, and any restrictions or sensitive areas to avoid. We work with your team to define clear rules of engagement before testing begins.

Related Insights

View All