The objectives of this academic article were to study 1) various dangers of online society and 2) methods or measures to prevent being a victim of online society. Social network has played a major role in people's daily life. Regularly posting your lifestyle will give the opportunity to your followers that you know or not know can trace your daily life. There may be other malicious hidden in the online world. This can lead to crime in real life without knowing when the danger will come, so you should know how to protect yourself from being a victim of social media.