The article examines the structure of criminal misinformation in criminal proceedings from the standpoint of a forensic analysis of the ratio of false and formally reliable information. The ar-ticle substantiates the position that modern disinformation distortions are increasingly formed not through isolated lies or falsification, but through complex information and cognitive constructions that include true, procedurally acceptable information that performs a disinformation function. It is shown that traditional forensic tools, focused mainly on identifying deliberately false data, are insufficient to recognize distortions that occur at the level of selection, interpretation and systema-tization of information. Special attention is paid to the analysis of typical forensic techniques for using formally reliable and false information in the structure of disinformation, as well as their role in the formation of stable distorted information and cognitive models of criminal proceedings. It is concluded that it is necessary to move from exposing individual false information to criminal-istics diagnostics of disinformation structures in general in order to reduce procedural risks and improve the quality of evidence.