Launching new software involves more than making sure the application works as intended. Security should be evaluated throughout the software lifecycle, particularly before the application reaches users and after it enters production.

A pre-launch security assessment can help identify weaknesses before attackers have an opportunity to exploit them. Post-launch testing provides another layer of validation because production environments, configurations, integrations, and application behavior can differ from development or staging environments.

A strong security strategy therefore treats testing as an ongoing process rather than a single activity before release.

What Should Companies Test Before Launch?

Security testing before launch gives development and security teams an opportunity to identify and address vulnerabilities before the application becomes publicly accessible.

Start With a Vulnerability Assessment

A vulnerability assessment can provide an initial view of weaknesses affecting the application and its supporting infrastructure.

Testing may identify outdated components, insecure configurations, exposed services, and known vulnerabilities that should be addressed before deployment.

Vulnerability assessments can also help organizations prioritize areas that require deeper investigation.

However, scanning alone cannot determine every way an application could be attacked. More comprehensive testing may be necessary before a production release.

Perform Web Application Penetration Testing

For software delivered through a browser, web application penetration testing can examine how the application responds to realistic attack scenarios.

Testing can cover authentication, authorization, session management, input validation, access controls, APIs, business logic, and other application functionality.

This type of testing can uncover vulnerabilities that automated tools may not fully understand, particularly when exploitation depends on application workflows or interactions between different features.

Test Mobile Applications

If the software includes Android or iOS applications, mobile security should be assessed before launch.

Mobile application penetration testing can evaluate authentication, authorization, local data storage, session handling, API communication, and other security controls.

Mobile applications often rely on backend APIs, so the security of the communication between the mobile client and backend services should also be considered.

Validate Vulnerabilities Through Penetration Testing

Penetration testing provides a deeper assessment by attempting to validate whether security weaknesses can actually be exploited.

A penetration test can help organizations understand the potential impact of vulnerabilities and whether multiple weaknesses could be combined into a realistic attack path.

Testing before launch gives businesses an opportunity to address significant issues before the software becomes available to customers or employees.

Retest Before Release

Fixing vulnerabilities is not necessarily the end of the process.

Once identified issues have been remediated, security teams should retest the affected functionality where appropriate. This helps confirm that vulnerabilities have been properly addressed and that fixes have not introduced additional problems.

A useful pre-launch cycle is:

Discover → Validate → Fix → Retest → Approve for Release

This provides greater confidence before software moves into production.

What Should Companies Test After Launch?

Pre-launch testing provides important assurance, but production introduces variables that may not have existed during development.

Once software is live, organizations should continue monitoring and testing its security.

Assess the Production Environment

Production systems can differ from staging environments in configuration, infrastructure, access permissions, integrations, and exposed services.

A post-launch vulnerability assessment can help identify weaknesses that appeared during deployment or were not present in the pre-production environment.

Companies should also verify that unnecessary services, administrative interfaces, debugging functionality, or sensitive information are not exposed publicly.

Test Real Application Workflows

After launch, security teams can evaluate how the application behaves under real production conditions.

Testing can focus on authentication, authorization, user roles, business logic, APIs, and interactions between different components.

This is particularly important when an application handles sensitive customer information, financial transactions, or other critical business processes.

Monitor Changes Continuously

Applications rarely remain unchanged after launch.

Businesses may release new features, modify APIs, update dependencies, change infrastructure, or integrate third-party services. Each change can introduce new security risks.

Continuous penetration testing can help organizations maintain security testing as applications and infrastructure evolve.

Instead of waiting for an annual assessment, organizations can establish a recurring cycle of testing, remediation, and retesting.

Retest After Major Changes

Security testing should also be considered after significant application changes.

Examples include:

• Major feature releases

• Changes to authentication systems

• New APIs or integrations

• Infrastructure migrations

• Significant cloud configuration changes

• Changes to payment functionality

• Major database changes

• Security incidents

The appropriate frequency depends on the application's risk, complexity, exposure, and rate of change. Businesses can review how often penetration testing should be performed when developing their testing schedule.

How Do Pre-Launch and Post-Launch Testing Work Together?

The two stages serve different purposes.

Before launch, testing focuses on identifying and fixing weaknesses before exposure.

After launch, testing focuses on validating the production environment and identifying weaknesses introduced or revealed after deployment.

Neither stage completely replaces the other.

A vulnerability fixed before launch may reappear after a configuration change. Likewise, a production-specific issue may not have been visible in the development environment.

Combining both approaches creates a more complete security lifecycle.

Manage Testing Costs

Security testing costs depend on several factors, including application size, number of endpoints, infrastructure complexity, testing depth, and scope.

Businesses can review penetration testing costs when planning their testing requirements.

Vulnerability assessment pricing can also vary based on the number of assets and assessment scope. Organizations can review vulnerability assessment costs when estimating their security testing budget.

Smaller organizations should also consider their overall cybersecurity budget and prioritize testing around their most important systems and business risks.

Choose the Right Security Testing Provider

The effectiveness of security testing depends heavily on the testing methodology and expertise of the provider.

Businesses should consider application security experience, technical capabilities, testing scope, reporting quality, communication, and remediation support when evaluating providers.

This guide on how to choose a penetration testing company provides factors businesses can consider when selecting a security testing partner.

Build Security Testing Into the Software Lifecycle

Security should not be treated as a final checkpoint that happens immediately before launch.

A stronger approach is to integrate security testing throughout the software lifecycle:

Development → Pre-Launch Testing → Remediation → Retesting → Production Launch → Post-Launch Testing → Continuous Monitoring

This approach allows organizations to discover vulnerabilities earlier while continuing to evaluate security as the application changes.

It also aligns closely with the principles of vulnerability management, where organizations continuously identify, prioritize, remediate, and validate security weaknesses.

Conclusion

Security testing should happen both before and after software launches.

Before launch, companies should use vulnerability assessments, application testing, mobile security testing, penetration testing, remediation, and retesting to identify weaknesses before production exposure.

After launch, organizations should assess production environments, test important workflows, monitor changes, and perform additional testing when applications or infrastructure evolve.

The most effective approach is continuous rather than one-time. By making security testing part of the software lifecycle, businesses can identify vulnerabilities earlier, validate fixes, and maintain better visibility as their technology changes.