Security can be removed, but deleting the MDW file alone isn't sufficient.
See section 34 of the Access Security FAQ at
http://support.microsoft.com/support/access/content/secfaq.asp

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Doug Steele, Microsoft Access MVP
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<carriolan@> wrote in message
news:vl5op11fd60k0a6m43arf95p8pga971d7b@4ax.com...
> Hi
> I am a security newbie. My question is: can a MDW file which relates
> to a specific MDB app be deleted by a user and thereby remove the
> security from that app?
> Regards
> Carriolan
carriolan@ wrote:
> Hi
> I am a security newbie. My question is: can a MDW file which relates
> to a specific MDB app be deleted by a user and thereby remove the
> security from that app?
> Regards
> Carriolan
If security was done properly (often not the case), then the file will only be
accessible when using an appropriate MDW file. If there is only one appropriate
MDW file (usually the case), then deleting that MDW file would make the MDB file
totally inaccessible (except to those with security hacking tools).

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RBrandt at Hunter dot com
carriolan@blootoo.com - 12 Dec 2005 17:44 GMT
Thanks
Carriolan
>carriolan@ wrote:
>> Hi
[quoted text clipped - 8 lines]
>MDW file (usually the case), then deleting that MDW file would make the MDB file
>totally inaccessible (except to those with security hacking tools).