Page Level Security:  There are two controls defined on the page level which are.
Read only: This feature opens the pages on read-only mode i.e. no modification allowed, and page actions are disabled.
Block Execution: This feature restricts user access to the page.

 Field Level Security:  This feature allows for visibility and execution control on specific page features. The features Read, Hide or Edit controls can be defined for fields, fast tabs and subpages. For Page Actions you can hide or disable.

 Data Security:  
Data Security feature introduces control on application data that a user can have access to, based on filters defined on Security setup and applied to the record fields Salesperson Code, Location Code, Responsibility Center, Global Dimension 1 and Global Dimension 2. The filters are applied to all Standard Business Central records that have these fields.

Additional Filters are defined on User Setup for Transfer-to and Transfer-from filters for Transfer Documents. Individual Salesperson filter is also defined on User Setup.

 Data security Default Values:  
These are values defined as default for a user account updated on user setup i.e. these values will be used as default values when the assigned user is creating the specified documents.

The default Value fields are Salesperson Code, Location Code, Responsibility Center, Global Dimension 1 and Global Dimension 2 for when creating Customer, Vendor, Sales Document, Purchase Document or Service Document. The default values Default Transfer-from Code, Default Transfer-to Code, Global Dimension 1 and Global Dimension 2 are used for Transfer Documents.

 Change Log:  This feature tracks insert, modify and delete actions on records by storing an instance of the record when a change is made. These records are maintained in tables specific to the record being modified hence optimized access compared to standard change log.

 Deleted Records:  With this feature you can track all deleted records. It’s not specific to a record but specific to a table e.g. for Customers, all deleted Customer records can be accessed from Customer List or card.

 Raw Data Access:  The app gives access to Change Log raw data for all tables enabled for History tracking. These data can be extracted from the respective lists and analyzed further.