What in the world… why are you seeing ads for things that you just did on the Internet? The answer is that, by using certain websites and clicking certain hyperlinks, you're generating information that companies like Google and Facebook can collect. They then sell that information to advertising agencies, which then use it to display certain advertisements to people on certain websites, based on the specific person's browsing activities.
There are some governments around the world that are very interested in what their citizens do online. Many of these countries have agencies that track where people go on the Internet and what they do there, looking for "suspicious" or "immoral" activity. Some governments even have systems in place that actually block people from going to certain websites.
Privacy on the Internet is of utmost importance for people who live in these countries. It allows them to do certain things online — such as watching a funny video clip, reading newspapers from around the world, or chatting with their friends on social media — that we might take for granted, yet are forbidden in the country where they live.
Now that you know about some of the ways that people protect their privacy on the Internet — and some legitimate reasons why they do so — it's time for you to learn how to be privacy-wise online. We'll go over some general privacy-related things on the Internet to be aware of, including website policies and targeted advertising practices. Then, we'll teach you some basic and advanced methods of staying private on the Internet, and explain why doing these things protects your online privacy. Lastly, we'll go over some of the neat technologies that help keep your online life strictly your own business.