R261. Avoid exposing sensitive information


The application must not expose sensitive information on sections that are publicly accessible.


Some applications have sections such as web pages and endpoints that are publicly exposed or do not require an initiated session to be accessed. These sections should contain neither sensitive corporate information nor users' or employees' personal data. Furthermore, corporate sensitive information should not be exposed on personal social network accounts either.


  1. CWE-200: Exposure of Sensitive Information to an Unauthorized Actor. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

  2. Directive 2002/58/EC (amended by E-privacy Directive 2009/136/EC). Art. 4: Security of processing.(1a) The measures referred to in paragraph 1 shall at least ensure that personal data can be accessed only by authorized personnel for legally authorized purposes.

  3. GDPR. Art. 5: Principles relating to processing of personal data.(1)(f). Personal data shall be processed in a manner that ensures appropriate security of the personal data, including protection against unauthorized or unlawful processing and against accidental loss, destruction or damage.

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