https://devzone.nordicsemi.com/f/nordic-q-a/29242/connecting-to-previously-bonded-deviceIs the link automatically secure when connecting to a previously bonded device i.e when BLE_GAP_EVT_CONNECTED is published? When devices are pairing/bonding, the peer manager publishes the PM_EVT_CONN_SEC_SUCCEEDED event. But if it is already bondeden-USTelligent Community 13Mon, 08 Jan 2018 13:44:26 GMThttps://devzone.nordicsemi.com/thread/116331?ContentTypeID=1Mon, 08 Jan 2018 13:44:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fda70d53-5c4e-4c79-bcb2-fa90dc2ac323Petter Myhre<p>BLE_GAP_EVT_CONNECTED only means that you have connected, not that the link is encrypted.</p> <p>Either the central or peripheral must initiate encryption.</p><div style="clear:both;"></div>