Technology has given rise to inventions such as the computer and the internet. All these things are seen as necessities in the very fast paced life that we live in. We rely on computers and the internet for a slew of things that we have to get done.

However, there is a lot that we have to understand with these useful gadgets.

Something which we do not really have a clue about is what happens every time we surf the web and key in personal information in several websites. What happens is that our computers take note of that and stores those things in our hard disk.