Actually, this is not true at all. Most people and activities on the Internet are legitimate. However, that doesn't mean you shouldn't beware of serious risks. The most important is anonymity. It's very easy to hide your identity and it is difficult for others to figure out who you are.
Low cost is also important.
It costs a few dollars a month to get an email account, and with that, someone can cause a lot of grief. For a bit more money, they can create a fraudulent Web site. Both can be very inexpensive, compared to other methods of committing fraud. Since there is such rapid expansion of the Internet, there is always a huge base of new users to exploit. These new users are unaware of common scams and how to protect themselves.