Friends only picture show thumbnail!

So users are uploading risky photos that only friends should be able to view, but the album has a photo preview of the risky photos in question!

Anyone know a quick hack to fix this?!

Hello!

If u ask about D7 - then every album has privacy option during creation/editing process. All content from similar albums will be available only for friends.

If about D6 - then quick hack isn't possible because need to modify browse / view queries for adding friends settings.

Regard