Given a part of privacy policy text, identify the type of personal information which is collected, used, tracked or retained. The type of information should be present inside the given policy text, answer as 'Not Specified' otherwise

Let me give you an example: The site collects your cookies or tracking elements for a basic service or feature. Collection happens in an unspecified way, and your data is aggregated or anonymized.
The answer to this example can be: Cookies and tracking elements
Here is why: The type of user information collected is clearly stated in the given policy text as 'cookies or tracking elements'

OK. solve this:
User authentication, e.g., login to a user account, is encrypted/secured.
Answer:
Not specified