Ensure your app’s architecture is well-documented, and update all software to the latest versions. This way, testing focuses on actual vulnerabilities, not outdated issues already resolved by patches.

Before diving into application pen testing https://www.immuniweb.com/resources/application-penetration-testing/ , it's important to start by clearly defining the scope of what you want tested, focusing on the most essential areas like user authentication and sensitive data handling. Make sure your software and plugins are updated to eliminate any issues related to outdated versions. Also, back up all your data beforehand to avoid accidental loss during the process. Lastly, document your app’s architecture thoroughly so the testing team can navigate it smoothly.