Certificates belonging to the DV (Domain Validation) category confirm the rights to manage domains, i.e. only domains authenticate. Viewing such a DV certificate gives the user the confidence to find it on the website located at the address that is entered in the browser line. At the same time, the cybercriminals did not redirect the user to a fake website. But the certificate does not contain information about the ownership of the site - there will be no information about the owner in it. This is due to the fact that the procedure for obtaining a certificate does not require the provision of documentary evidence of the customer's identification data. So they can be fictitious, that is, the customer of the certificate can be issued for another person. Certificates from the OV category (Organization Validation) can serve as a confirmation of the rights to manage a domain name and the existence of an organization with such rights, i.e. both the domain itself and its owner are verified by it. Viewing such certificates gives the user confidence in going to the site at the address entered in the browser line and receiving reliable information about the owner of this resource. To carry out the launch of the OV certificate, the customer will need documentary evidence of their own identification data. For certain types of certificates, hopeValidated by both the domain and the owner, the release procedure is set only when an extended validation of their customer has been performed. Thus, the provision by customers of data that does not correspond to real information is excluded. These are certificates from the category EV (Extended Validation). In the process of accessing sites with installed EV certificates, the line in the browser turns green and serves as an indicator that unambiguously confirms the reliability of the resource for the web user. A special type of certificates are Certificates issued for developers (Code Signing). They serve to confirm the authenticity of programs during their download, the integrity of the content, as well as the reliability of the source. By which the product is provided. Using digital signature technology, they confirm the uniqueness of the programs downloaded on the network, and provide a guarantee that the web files have not been modified.