Agreed on that--if you want to secure your Access database, you're going to have to use obfuscation, i.e. rename the file to something like "README.TXT" (no one reads them anyway, right?) or even something fun, like "MSXML.DLL".
And/or you can use some external encryption program to encrypt the database, so you would 1)decrypt the database, 2)use the decrypted database while the program is open, 3)encrypt the database again.
...but Access/JET is fundamentally unsecurable.