Det har varit rapporterade that researchers from the Norwegian University of Science and Technology (NTNU) put 2,500 Docker images from Docker Hub to the test. In a uppsats, the computer security researchers describe how they used the open-source Anchore Engine security scanner and their own scripts to analyse a sample set of 2,500 Docker images. They found about 17.8 per cent (430) of the Docker images contained no known vulnerabilities, or 21.6 per cent (533) if you ignore negligible vulnerabilities.