The paper shows what false information is on the Internet and how it can be spread, but also prevented. The Internet is filled with an infinite amount of information that is constantly available to users. False information is divided into two divisions according to the intention of the user who spreads it, namely misinformation and misinformation. The creation and dissemination of false information mainly uses artificial intelligence, such as bots and automated UIs for generating texts and for videos - deepfake. Artificial intelligence is used not only to create and disseminate false information, but also to defend against it, with the analysis and labeling of false information to make it easier for users to get information on the Internet. The paper also talks about Big data technologies, which are also used for retrieving and analyzing information, for easier work with information and their best quality and accuracy. Social networks have the biggest role in creating and spreading misinformation, where they are the easiest to spread and the least can be controlled, so the greatest caution and attention is recommended when using social networks. The aim of this paper is to bring the concept of false information closer to Internet users, in order to more easily identify different types of false information and ways to spread it. The great importance and influence of technologies such as artificial intelligence and Big data in the creation and dissemination of false information is pointed out, but also how to stop the spread of this false information with these technologies.