Sometimes they do this for good reason, on your explicit request. But often they don't. Little Snitch allows you to intercept these unwanted connection attempts, and lets you decide how to proceed.

Little Snitch informs you whenever a program attempts to establish an outgoing Internet connection. You can then choose to allow or deny this connection, or define a rule how to handle similar, future connection attempts. This reliably prevents private data from being sent out without your knowledge. Little Snitch runs inconspicuously in the background and it can also detect network related activity of viruses, trojans and other malware.

What's New Version 3.4 (4212)
• Added support for OS X Yosemite.
• Improved AFP support.
• Improved detection and handling of OpenVPN connections.
• Improved handling of terminated processes in connection alerts.
• Improved display of TCP connection states in Network Monitor.
• Improved detection of corresponding rules in Network Monitor.
• Improved indication of incoming and outgoing connections in Network Monitor.
• New search scope for incoming and outgoing connections in Network Monitor.
• Fixed rare installer crash caused by wrong file system permissions.
• Fixed a rare kernel panic.
• Minor bugfixes and improvements.

Requirements - MacOSX 10.8 or Later
Home Page - http://www.obdev.at/products/littlesnitch/index.html

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