CUSTAR is registered with the Spanish Data Protection Agency and has implemented the security measures at all levels required by the data protection regulations, specifically the Organic Law on Data Protection 15/1999, of 13 December and Royal Decree 994/1999, of 11 June, which approved security measure regulations for electronic files containing personal information.

CUSTAR has signed non-disclosure agreements with its employees.
In addition to establishing Non-disclosure Agreements, the company has technical or organisational resources in place to protect confidential information, irrespective of the medium on which it is processed or stored.