#Debian and #FDroid require signature verification, and #FDroid is built on top of #Android's APK signing. This improves things a lot but does not mean they are immune. Debian and F-Droid repos can still override packages lower priority repos. It could make sense to have a "no overrides allowed" setting, but that would restrict useful features. Maybe F-Droid could implement "no new signing keys when overriding" rule by default, I wonder how much that would break what people are doing now? 2/2