What does "user security code changed" mean in WhatsApp?

What does user security code changed mean in WhatsApp - briefly?

The message "User Security Code Changed" in WhatsApp indicates that the six-digit PIN used for two-factor authentication has been altered. This typically occurs when a user updates or resets their security code to enhance account protection.

What does user security code changed mean in WhatsApp - in detail?

The message "User Security Code Changed" in WhatsApp indicates that the six-digit passcode used to verify your identity on a new device or after reinstalling the app has been altered. This code is generated automatically by WhatsApp and serves as an additional layer of security, ensuring that only you can access your account on a new device. When you see this message, it means that the code associated with your account has been updated for some reason, such as a change in phone number or a reset initiated by you or someone else with access to your account. To maintain the security and integrity of your WhatsApp communications, it is crucial to verify any changes to your security code promptly and take appropriate action if unauthorized activity is suspected.