You can download Messenger for Desktop to easily access the desktop app. While MFD is similar to a web browser, the platform can only access the Messenger website.
The official Facebook software securely handles that data. Additionally, MFD does not touch messages. Messenger for Desktop does not have access to personal account information: usernames and passwords. Messenger for Desktop is a secure host for the Facebook Messenger official hub to be accessed. Is Messenger for Desktop safe to install?