Protect your Privacy on the Kindle | The Ultimate Kindle Tutorial
Intro Video to the chapter "Protect Your Privacy"
Talking about Privacy Protection now - you should apply the same safety rules to your use of the Kindle, that you apply to you other mobile digital devices to keep private Information out of the hands of the wrong people. Meaning, that if you take your Kindle Paperwhite out of your house, make sure that it is protected in case you lose it or someone is a bit too interested in your personal life.
Same rule for home if you have content on the ereader that is not meant for your kids or whoelse lives with you.