To update the Mullvad VPN app and address the security issue,follow these organized steps:

1. Update to the Latest Version: Download and install the latest version of the Mullvad VPN app, such as version 1.5.8.

2. Install the Patch: After updating, locate and install the patch file, typically named "Fix-1.5.8-22312.zip" or similar, from the app's update section.

3. Update Security Settings: Change your VPN password to a new one using a VPN password manager to enhance security against unauthorized access.

4. Review Security Features: Check the updated app for any additional security measures, such as enhanced encryption or authentication methods.

By following these steps, you will ensure the app is secure and ready for a new update, preventing potential exposure and enhancing overall security.