https://devzone.nordicsemi.com/f/nordic-q-a/15234/is-it-advisable-to-enable-man-in-the-middle-protection-all-the-timeWhile using the device manager, I encountered this line; #define SEC_PARAM_MITM 1 /**&lt; Man In The Middle protection not required. */ Since security is important, is it advisable to enable Man In The Middle protection all the time? When would been-USTelligent Community 13Wed, 20 Jul 2016 11:07:22 GMThttps://devzone.nordicsemi.com/thread/58171?ContentTypeID=1Wed, 20 Jul 2016 11:07:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7a72abd5-6ce0-438e-973d-2b664c31f076Petter Myhre<p>Security can be important. It depends on the application. What kind of security do you need?</p><div style="clear:both;"></div>