Software installation packages downloaded from the internet often prompt:
xxx is damaged and can't be opened. You should move it to the Trash.
Now summarize the solution.
In general, methods one and two can solve the problem. If the above two methods do not work, please try method three.
Method One#
In System Preferences - Security & Privacy - General tab, select the option to allow apps downloaded from Anywhere.
Method Two#
If there is no option for Anywhere, open the terminal and execute
sudo spctl --master-disable
Method Three#
If methods one and two have no effect, execute the following command in the terminal
sudo xattr -r -d com.apple.quarantine /path/to/app
Where /path/to/app is the path where the app is located, for example, XMind ZEN.app would be
sudo xattr -r -d com.apple.quarantine /Applications/XMind\ ZEN.app