The Privacy mode focuses on allowing or restricting Maltego to make a direct contact to the target.
There are two modes in this feature:
1. Normal Mode
2. Stealth Mode
Normal Privacy Mode
This mode allows Maltego to fetch certain information such as image from URLs or favicon for website overlays. All the connections will be made between the CTAS and the target not from the desktop client itself.
Stealth Privacy Mode
This mode will restrict Maltego to pull image or favicons from a URL. This is helpful if you are investigating an important or sensitive target.
Read more about the Privacy Mode usage here: A step towards stealth mode