Disclosed herein are systems and methods for determining trust levels of files on a computing device. In one aspect, an exemplary method comprises, selecting file names which are stable, generating at least one group of files from at least two files of the selected file names, the at least two files being components of a same application, searching for a presence of a dominant developer such that at least one private key of the dominant developer has been used to sign at least one file of the group of files that is generated, when a dominant developer is found, determining a trust level for all files of the group in accordance with verdicts associated with the dominant developer, and when the dominant developer is not found, determining the trust level for all the files of the group based on verdicts of outside services that have been assigned to the files of the group.