@TP-Link I've checked my network security via Deco Wifi Assistant on older iPhone model, there was no DNS hijacking warning. Therefore I think this issue is related to new iOS version 14.5. Guess...

@TP-Link Thanks. Will check another Wifi. In the meantime, check my support request, I've sent it just now.

Hello, after yesterday's iOS update to 14.5, Wifi Assistant in Deco App V2.7.4 (Deco M4 device) is constantly showing "Not Secured - Risk of DNS Hijacking" status. I haven't changed my Wifi settings...