I'm curious as I've been running DNS66 on my previous and current phone and whilst it does exactly what it says (blocks all ads across the device) my concern is that the last published update in fdroid sas 2021. I'm currently running AdAway which has been more recently updated and does an equally good job of blocking in-app ads. My question though is more, if the software is still doing what it was intended to do is there a fundamental risk in using software that is no longer being updated?