This Systems Audit Service performs the evaluation and diagnosis of information systems, which allows the validity, integrity and reliability of the data and information processed by the interaction systems to be detected, supported by the use of the automated audit tool. ACL, for the execution of Systems Audit tests. The work methodology of the systems audit team is based on the guidelines implemented by CobiT, regarding the control objectives for information and technologies. Additionally, we work based on the best practices of information security, considerations, related to the segregation of functions and access to information. The main services we offer in the Systems Audit area are: Evaluation of the general controls of the Computer. Evaluation of the security scheme for access to information systems. Review of the integrity and quality of the data. Review of internal control of applications. Design of access proposals considering adequate segregation of user functions. Review of Business continuity and Disaster recovery plans and related risks.