Whether businesses, or former lovers, these are people who are trying to find out something that we may not want them to know.
Some protection is provided by the law.
But in this message we focus on tools you can use to protect yourself. If privacy is the ability to control what others know about you, there are tools cyberspace will give us to exercise that control. The most important tool will be the use of encryption. The two key system works like this. Say Alice wanted to send Bob a message, and be certain that only Bob could read that message.