It's letting you know that there are a lot of hackers , spammers , and viruses. So you shouldn't give any of your information to anyone online. Also , you shouldn't give your password or username to anyone because they pretend to be you or say some stuff and then you get blamed for it. You got to watch what you post about yourself or others or allow your friends to post about you because you may have to live with it for a long time. You shouldn't write hate emails or hack somebody else computer or illegaly download music becuase