To keep protocol’s and devices data safe you can use a password to keep your data safe in a document that only you know the password so only you can get into it you should use a password that no-one would think of for example an old nickname and not something like your birthday or family member. Also do not leave your documents logged in so no-one can get into your account without any difficultly. Bluetooth is very easy to hack as the code is
easy to read whilst Wi-Fi is protected by W.P.A making it harder to hack into unless you leave your Wi-Fi open then it is only a click away to hack into. Encryption scrambles yourown personal information so its easier to not hack into your devices and if they did then your information is scrambled to it is very hard to read and understand