WinRAR how to lock compressed files for security

When the file is deleted in the RAR compressed package, the WinRAR automatically updates it, and the deleted files are never retrieved. Therefore, for compressed packages that do not need to be modified or more important, in WinRAR, click to select this package, press the Alt+i key combination, in the Open Information dialog window of this compression, click to switch to the Options tab, confirm the "Disable the Modify compressed file" checkbox in the "Lock Compressed Files" Sample check box is selected, Click the OK button. The compressed package is locked so that the file cannot be modified or deleted. Note: The above actions are only for RAR compressed files, and after the lock compression file feature is enabled, the resulting compressed package will no longer be modified, which is useful for backing up important data.