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How do protocols and devices keep data safe?

Data can be kept safe buy using security on your device/protocols. Also they can use a variety of passwords so that only you can access your data but use a secure password that isnt easy to guess for example ..chicken123. Devices and protocols can also transfer your data into a memory stick just in case the data erases on the protocols and devices.

ENCRYPTION.

encryption is a process where you can transfer information where you are the only one able to read it. it is usually referred to as a key.