Data encryption on a split Access DB

[Guest]

We have a split Access database. The front end is on the individual stations
while the data tables are in the back end database on a server.

I would like to protect the data on the back end so that, if stolen, the
back end data cannot be used. The idea would be to have some kind of real
time encryption/decryption mechanism, making the encrypted backend data
readable only when loaded in the front end Access.

Any idea?
Thank you all for any suggestion you can provide.
Gino

 

[Keith Wilby]

We have a split Access database. The front end is on the individual
stations
while the data tables are in the back end database on a server.

I would like to protect the data on the back end so that, if stolen, the
back end data cannot be used. The idea would be to have some kind of real
time encryption/decryption mechanism, making the encrypted backend data
readable only when loaded in the front end Access.

If you realistically suspect that your data may be stolen and that data is
sensitive then I would recommend you use Oracle or some other beefy SQL
based BE. Good as it is, Access security can be broken by a determined
hacker.

Regards,
Keith.
www.keithwilby.com

 

[Guest]

Hi Keith,
thank you very much for your suggestion. We do understand that Oracle would
overall be a much more comprehensive security solution; unfortunately the
system is a small departmental application and there is no expertise to
implement an Oracle solution.

What we would like to do for now is to have a first line of defense
minimizing the possibility that the content of the database be open at home
by employees who may have copied the back end Access database for casual
personal use (which may however result in totally exposing some confidential
data to potential disclosure).

I heard that there are some external encrypting programs which can
decrypt/encrypt files when opening/closing applications. I was wondering
however if somebody has been able to create an encryption/decryption scheme
within an Access FE/BE application itself or has some ideas on how to go
about it.

Thank you again and regards
Gino

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[jacksonmacd]

We have a split Access database. The front end is on the individual stations
while the data tables are in the back end database on a server.

I would like to protect the data on the back end so that, if stolen, the
back end data cannot be used. The idea would be to have some kind of real
time encryption/decryption mechanism, making the encrypted backend data
readable only when loaded in the front end Access.

Any idea?
Thank you all for any suggestion you can provide.
Gino

Have you applied user-level security to the database? Done correctly,
it will make it such that your database cannot be opened without also
having the correct workgroup file, plus having the required usernames
and passwords.

Access user security is not to be taken lightly, so read very
carefully and thoroughly, practice on a COPY of your database, and
don't skip any steps in the process.

Here are a number of links about security:

http://home.bendbroadband.com/conradsystems/accessjunkie/resources.html#Security

Having said that, a determined hacker will be able to bypass Access'
ULS. It should be viewed as a means to keep out a casual snoop, but
will not stop a determined, knowledgeable hacker.
**********************[email protected]
remove uppercase letters for true email
http://www.geocities.com/jacksonmacd/ for info on MS Access security

 

[Guest]

Thank you for your suggestions. I had given up on receiving other ideas so I
did not look in here for a while.
I did try implementing Access Security on a test database once and found it
quite convoluted but I guess that if that is the only way, then that's the
only way.

I have a question though.
If somebody looked at a security protected Access DB using a hex text
editor, wouldn't he be able to actually see the data in the middle of all the
squiggly code?

If so then only encryption would reasonably protect the data (from
semi-knowledgeable snoopers because I understand of course that not even the
CIA can be 100% safe from intrusion by determined and skilled hackers)

In your experience do you think that there might be some ActiveX embeddable
in a VBA module, capable of on the fly intercepting and decrypting/encrypting
data flows from/to BackEnd and Front End Access DB?

Thank you very much
Gino