https://devzone.nordicsemi.com/f/nordic-q-a/122321/enabling-approtectHi, I want to enable APPROTECT in nrf52840 using NCs 1.8.0 or 2.4.2 or 3.0.0 can you tell the process of doing it? Also I want to know the use of Access control list . Is it applicable on RAM or FLASH Memory? Regards,en-USTelligent Community 13Tue, 17 Jun 2025 11:44:41 GMThttps://devzone.nordicsemi.com/thread/539532?ContentTypeID=1Tue, 17 Jun 2025 11:44:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:52f5b599-1a64-4354-acf7-9b4fcdb4757aMenon<p>Hello,<br />See this<a href="https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/working-with-the-nrf52-series-improved-approtect"> blog post on APPROTECT</a>, and you can read about the<a href="https://docs.nordicsemi.com/bundle/ps_nrf52840/page/acl.html"> Access Control List (ACL) here</a>. In general, the ACL on the nRF52840 is a hardware feature that helps protect specific areas of Flash memory while your application is running. It prevents accidental or unauthorized changes to these areas, improving the safety and security of your application.</p> <p>Also<a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/security/ap_protect.html"> check this page</a>.</p> <p>Kind Regards,</p> <p>Abhijith</p><div style="clear:both;"></div>