The phrase you provided is a known Google Dork (a specialized search query) used to find vulnerable websites running the ASP-Nuke portal system.
files, an attacker can simply download the file and extract the contents using standard database tools. Exploit-DB How to Prevent This Restrict Access : Use your web server configuration (like web.config for IIS) to deny all web access to the directory or Move the Database db main mdb asp nuke passwords r work
Best Practices:
MDB (Microsoft Access Database) Security The phrase you provided is a known Google