pegasus spyware
Can a user of an IPhone determine if their device is infected?
Not likely, but unless you fall into a small class of users (Kings, Prime ministers, Presidents, other high government officials, journalists, terrorists, drug dealers, enemies of a repressive regime) the probability of your phone being infected is vanishingly small. There is a tool that can possibly can determine of your phone is infected by analyzing your computer backup: https://github.com/mvt-project/mvt