Sensitive information disclosure


Sensitive information disclosure check. This includes credit card numbers, health records, personal information, etc.


Sensitive information leakage is an application weakness where an application reveals sensitive, user-specific data. Sensitive data may be used by an attacker to exploit its users. Therefore, leakage of sensitive data should be limited or prevented whenever possible. Information Leakage, in its most common form, is the result of differences in page responses for valid versus invalid data.

Pages that provide different responses based on the validity of the data can also lead to Information Leakage; specifically when data deemed confidential is being revealed as a result of the web application’s design. Examples of sensitive data includes (but is not limited to): account numbers, user identifiers (Drivers license number, Passport number, Social Security Numbers, etc.) and user-specific information (passwords, sessions, addresses). Information Leakage in this context deals with exposure of key user data deemed confidential, or secret, that should not be exposed in plain view, even to the user. Credit card numbers and other heavily regulated information are prime examples of user data that needs to be further protected from exposure or leakage even with proper encryption and access controls already in place.