https://devzone.nordicsemi.com/f/nordic-q-a/117109/vulnerabilities-in-the-proprietary-modeHello person in charging, I would like to know whether there are something information on vulnerabilities in the proprietary mode of nRF51 and nRF52, respectively. Thanks in advance. Kind regards,en-USTelligent Community 13Mon, 09 Dec 2024 09:42:37 GMThttps://devzone.nordicsemi.com/thread/513983?ContentTypeID=1Mon, 09 Dec 2024 09:42:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:97cf7f3d-8852-4435-903d-1402d0462c2bKenneth<p>Hello,</p> <p>It depends on which proprietary mode you are referring to.</p> <p>In ESB there is no security built in, so any security there must be fully handled by layers above ESB.</p> <p>For Gazell, you can add the Gazell pairing library, which will ensure security, as discussed here:<br /><a href="https://docs.nordicsemi.com/bundle/ncs-2.8.0/page/nrf/protocols/gazell/gzp.html#ug-gzp">https://docs.nordicsemi.com/bundle/ncs-2.8.0/page/nrf/protocols/gazell/gzp.html#ug-gzp</a>&nbsp;</p> <p>I am not aware of any vulnerabilities in Gazell.</p> <p>Kenneth</p><div style="clear:both;"></div>