All these anti virus is virus to me.
It scans pc all the time , making high usage on cpu and disc drive. Un usable for mid range pc
It will sometime detect virus, which is not. And deletes game dll files , so unplayable.
Even real virus detected, it constantly popups saying it cannot be deleted
Is that ios or android?
For software hacks,
Turn off wifi and mobile data , location immediately!
Then back up data, wipe your phone.
For hardware hacks,
Is there anything , hardwares added to you phone? Inside or in cover? If found , destroy it
Of coz online storage is never safe.
All these defenders, firewalls scan and block what it think it is virus , and most of the time it just prompt a warning and do nothing.
Or it deletes some dll files in my games /game editors so i cannot run,
I really had bad experience especially on older...
Yes
If you are new to pc, do not know what you are doing.will niot reinstall windows, have very important documents, (photo)
No
If you do regular backups.
There are many free anti virus softeares.