a deamon process, are you running a UNIX/Linux box?
The .ipd backups are just normal files one a computer there isn't anything special about them and then can be explored using programs such as ABC Amber BlackBerry converter. If you want the .ipd files more secure you may want to encrypt the files using EFS or a 3rd party encryption utility. Or depending how advanced you want to get place in a folder where only your user account has access and deny Read access to everyone else for that folder.
Please tell me if I am looking too deep into this. Or if I missing the point completely
How are you backing up the BlackBerry via a different login ID? Maybe editing the folder permissions for that user would be the easiest way to give them access.