For me it’s the paranoia surrounding webcams. People outright refuse to own one and I understand, until they go on and on about how they’re being spied. Here’s the secret - unplug the damn thing when you think you won’t use it or haven’t used it in a while.
They, whoever it is, can’t really spy on you on something that’s already off and unplugged!
PGP is ‘pretty good privacy’; it’s an encryption standard. It’s not the best, but it’s fairly easy to use, and it going to resist decryption pretty well, for most use-cases. The idea is that you have a public key, and a private key. The public key allows messages to be encrypted, while your private key allows decryption.