When you surf the Internet, everyone is watching.
Tracking companies, search engines and social networks try to learn your habits for advertising purposes. Your Internet service provider monitors every move to make sure you’re not doing anything illegal.
A government analyst somewhere might think you’re “interesting” because of a suspicious phrase you used in a tweet.
On the other side of the law, there are scammers and hackers waiting to pounce on any opportunity to steal your identity and your money.