Learn how your system backs-up everything. It could give information to the wrong people. Check out this article on privacy.
Keep your business and personal communication separate.
Smartphones track wherever we go, what we say, who we say it to, our likes and dislikes, and when we are playing games instead of working. As the statement goes, TMI, Too Much Information.
Most of us don’t know how to keep everything secret, unless we’re willing to stop using our computers and mobile devices.