Monitoring site changes - recommendations?

[lbruce]

Hello. What are folks best recommendation for a script or service of some kind to monitor changes to pages? Not an app for users looking for changes to their favorite sites. I need to monitor page tampering on sites I develop & host. I just had some porn hacks that got into a client's site on another server (not hostv). It is embarrassing to have a client call you cause their customers are seeing porn links tagged onto the bottom on their product pages...

[geek]

Yikes that must have been a killer. My first question is how are you going to monitor every single change or are you thinking about a certain directory and file type? Keep in mind the server does its own file changes too.