Metakine has released Hands Off! (http://www.metakine.com/products/handsoff/) for Mac OS X 0.6.4 and higher. It’s an US$19.95 application to monitor and control the access of applications to your network and disks.
When connected to the Internet, applications can send any information stored on your computer to whoever they want without you ever knowing. Using Hands Off!, you can monitor and control Internet connections from all applications as to expose hidden connections and prevent them from sending data or phoning home without your consent, according to the folks at Metakine.
Applications present on your computer can freely read, store or erase information on your computer without your knowledge. Using Hands Off!, you can monitor and control disk access from all applications as to prevent them from obtaining confidential information, erasing your data or storing cookies.