How website owners misuse user data? How to prevent this?

[Good-Person]

I have noticed that there are many different kinds of website owners who may try to misuse your user data. They may compel you to download some file and this is how they may send viruses or spyware. So, what are some other ways website owner steal personal information and how can this be prevented?

 

[Kane]

When you use a website service, you are required to submit your personal information and website owners might sell this information. Even if you submit just an email, they will collect these emails and sell them to marketing companies. There are two most common ways websites might misuse your data.