This paper presents the general characteristics of expert systems for processing of data analysis and secure information systems using vulnerability scanners and Big Data technologies. The work of vulnerability scanners is usually based on OWASP security standard recommendations that insist on the processing of various vulnerabilities and attacks. The number of queries to web-sites used by vulnerability scanners during the checking process may increase very rapidly and reach the size of Big Data. Thus, the consideration of Big data analysis becomes actual in this case.