Because the Internet is so easily accessible to anyone, it can be a dangerous place. Know who you're dealing with or what you're getting into. Predators, cyber criminals, bullies, and corrupt businesses will try to take advantage of the unwary visitor.
Social engineering is essentially the art of manipulating people to perform actions or divulge confidential information.There are many examples of scams, including Fraud and Predators/Fake friends.
Spam (unwanted email) in your inbox or pop-up messages and search results on the Internet try to get you to click on a link that makes it appear you are going to a legitimate website.
File Sharing and Piracy
If you don't enable the proper settings for your computer, you could allow access not just to the files you intend to share, but also to other information on your hard drive, like your tax returns, email messages, and medical records. If you have downloaded or shared material that is protected by copyright laws, which would mean that you could be breaking the law. Or, the files could be laden with dangerous code.