-Inform someone if something is going wrong on the internet e.g Stanger trying to communicate with you.
-Never give out passwords to anyone they can use it against you any time.
-Never agree to meet anyone that you have met online they can be descised as anyone.
How do we know its real??
For a start if you want to download movies see if other people have downloaded this file and also see the forums which in people say their oppinion about the file.
Also you can see if the file is real of fake by checking how big it is. Aproximetly a 2hour movie is about 2GB (depending on the analysis). If the file is less than 1GB or MB it is fake and probably has a virus.
Another way of getting a Virus is the fake programs that give you money or Exp. in games. All of those programs are fake and are just useless also they might even a survey.