Data loss is the most common casualty of beta testing. Ensure you have a full system backup—ideally one stored offline—before participating. If the beta corrupts your file system, you should be able to wipe the drive and restore it within an hour. Use "Disposable" Data
How do you ensure that a beta reader doesn't steal your work? beta safety best
Here is a short story about the "safety" of working with beta readers: The Case of the "Stolen" Story Data loss is the most common casualty of beta testing
: Maintain standard security practices like using strong, unique passwords and keeping your core operating system up to date. beta safety best