If I pair my Android phone and my laptop, I can share files over Bluetooth from the phone to the laptop. I’ve started finding this a really convenient method for me to send files to a Linux laptop without needing to install a separate app on either the phone or my laptop. Especially when I’m away from my home network (I use SFTP at home).
How secure is this? Is there encryption by default and could someone else nearby with a receiver potentially decode the file you’re sending?
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It is extremely unlikely that there would be a motivated enough attacker to target you. And if someone is not targeting you, but just attacking everyone in range, it’s unlikely the files you are transferring are of any value to them.
You can’t be too sure. Last thing anyone wants is someone to get ahold of their legendary Pepes.
Nobody sane is transferring legendary pepes unencrypted over Bluetooth. I use an encrypted USB delivered by courier with key provided upon proof of receipt (and payment, of course). Other than that they stay on an airgapped machine or cold storage.
You can only send encrypted files over bluetooth if you manually encrypt them