Mendip Data Systems

Database applications for businesses and schools


Security Challenge 1 - Show / Hide Tables

This is the first in a series of security challenges.

These are designed to show ways of making Access apps reasonably secure.


The application is an ACCDE file so all VBA code has been removed.

The file has been renamed as a runtime file (ACCDR). It will not run if the file type is changed.


Startup properties have been modified.

There is no access to the navigation pane, ribbon or the rest of the application window

The taskbar has also been removed. It is restored automatically when the application closes


The application contains a number of deep hidden tables (as well as the Access system tables)

These deep hidden tables cannot be viewed in the navigation pane.


The challenge is to:

a) find the name of each deep hidden table

b) determine the number of records in each table

c) find the contents of each field for the last record in the table with the largest number of records


The challenge is intended to be solvable.

Once you have done the first part, the other two parts should (hopefully) be fairly simple.

To make things easier for this challenge, it has deliberately NOT been password protected.


I hope you enjoy puzzling out this challenge


If you succeed, please send an email with your feedback (or use the feedback form provided)

Please include the answers to a, b & c together with how you solved the challenge and the approximate time taken. Screenshots may be useful


NOTE: Access databases, including this one, can NEVER be made 100% secure

A capable and determined hacker can break any Access database given time


Both 32-bit and 64-bit versions have been provided

Click to download the correct version for your computer:


    Show/Hide Challenge (32-bit) ; Show/Hide Challenge (64-bit)    Approx 0.25 MB (zipped)

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Difficulty Level  

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