what is zero-click

Do not click on strange links or your phone will be hijacked
fraudsters took advantage of message vulnerabilities to take control of the device without the victim clicking on the link sent. users just need to open and view the message to be infected with malicious code.
What is a zero-click attack? How dangerous is it?
the more the internet world develops, the more forms of cyber attacks are actively changing in a more complicated and dangerous direction.