In the digital era, the Internet has become one of the popular sources of searching for information. The information contained therein is not always reliable. The aim of the article was to determine to what extent the recipients verify the credibility of information posted on the Internet and to characterize the criteria helpful in assessing the credibility of information posted on the Internet. The implementation of the goal was based on the analysis of the literature on the subject and reports on the use of the Internet. The article includes, among others characteristics of the information attributes that make up its quality, as they are the main determinants in determining the criteria for evaluating information. The subject matter is so important that the awareness and knowledge of Internet users on how to use information posted on the Internet may protect against cyber attacks and facilitate decision-making and appropriate behavior. The literature on the subject and tutorials provide guidelines to help assess the quality of information, but research has shown that Internet users rarely consciously verify the content presented there. It is also difficult to determine to what extent the quality of information credibility may be sufficient when making decisions.