4.5.3. Information security. Access control

The Tax Agency has established an Information Security Policy approved by Resolution of the Presidency of the Tax Agency, dated November 8, 2012, aligned with the National Security Scheme. The Information Security Policy is the instrument used by the Tax Agency to achieve its objectives using the information and communications systems in a secure manner.

The Tax Agency has adapted its information systems to the General Data Protection Regulation and to Organic Law 3/2018 on the Protection of Personal Data and the Guarantee of Digital Rights. In 2020, the Tax Agency joined the European Union working group studying the adaptation of data protection systems shared between the Directorate General for Taxation and Customs Union of the European Commission and the Member States.

Within the framework established by the Information Security Policy, the Tax Agency has information protection and security mechanisms, including user and authorisation management and access control, the purpose of which is eminently preventive.

This control system, driven and supervised by the Internal Audit Service, is based on the registration of accesses. Every time a user accesses the corporate information system for an enquiry or for a management activity, they must declare the reason for access. Any access to tax information of a personal nature is registered together with a series of technical and administrative data which reveal its context and facilitate subsequent control. In 2020, the teleworking of public employees, based on remote access to information systems, has not altered the registration and access control processes, which have continued to operate normally.

The accesses of greatest risk are selected and audited, in accordance with the risk analysis and the guidelines of the Tax Computing Security and Control Commission. If the controller considers that it is a serious or very serious improper access, they can initiate a disciplinary proceeding, if applicable. Currently, users with any non-compliant access have decreased to one for every 533 users audited.

In 2020, 80.73 percent of all Tax Agency users were required to provide justification for access. As a result of this access control, 4 disciplinary proceedings have been initiated to date.

Finally, the transfer of information from the Tax Agency to public bodies, covered by article 95 of the LGT, have security and control measures equivalent to the above, regardless of their supply channel.