Hacking Uses
Here is a list of suggestions that writers can use when it comes to unique ways the characters can hack things. If you have some ideas that oyu would like to add to this list feel free to do so.

List:
-Bypass an electronically locked door.
-Unlocking the electronic lock of a motorized vehicle.
-Siphon money from another pony's bank account.
-Control electronic devices including drones and vehicles.
-Delete important data belong to a powerful organization.
-Scramble/tamper with communications between individuals in order to cause chaos and distrust.
-Cast spells from magical devices (only if they are electronic in nature).
-Hypnosis by planting subliminal images or hypnotic videos/music on another pony's computer.
-Hacking cybernetic limbs.
-Turning off pace makers (for a villainous way to kill a character).

I hope this gives you all some ideas for your stories.