Please excuse the terminology as I'm no expert in information security. My question is pretty straightforward:
How can I guarantee* that I am the only one with access to my local machine's data (screen, microphone, camera, files)?
* With the assumption that no one will physically come into my apartment and mess with the hardware.
I own a Macbook Pro running macOS. I have heard of cases where a laptop's data (camera/microphone etc..) has been accessed remotely without consent. I wonder whether it is possible to absolutely prevent such attacks.
Up to recently I thought that the hard drive's content was safe, but I don't think so anymore.
The simplest procedure I came up with is turning off the WiFi, reading/writing data to an external drive (like a thumb drive), unplugging the drive (and turning the WiFi back on).
Does the method above guarantee that no one beside me can access the external drive's data? Are there any easier methods?