ulkerparko Said:
"Okay, thanks for that, but what if every app has no permissions at all, but the green dot appears again, is that a sign of spyware?"
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You are welcome.
No. It is just that there is an app using your iSight Camera.
For note...
About a Hacked iPhone:
The only way for an iPhone to be hacked is if it is jailbroken. So, who is the seller? If purchased form Apple or an AASP (Apple Authorized Service Provider), then no worries there. If purchased elsewhere, then that might be a bit concerning in this case.
Restore your iPhone or Reset it:
If you are so concerned, then restore from a backup or reset your iPhone to factory settings. Important: Back Up First: Be sure create a back up your iPhone prior to performing an update, that way you have something to restore your iPhone from, should anything go wrong afterwards.
A. Restoring from a Backup:
Did your ever back up your iPhone with these installed? If so, back up you could back up your iPhone, and then restore it from the backup.
or...
B. Resetting to Factory Settings:
Another option would be to reset this to factory settings, as if you were to sell it. Go here: What to do Before you Sell, Give Away, or Trade in your iPhone, iPad, or iPod touch - Apple Support. Perform as instructed there, including the backup creation and iCloud logout.