> So I'm assuming Graphene is at least as strict as that?

GrapheneOS is a privacy and security hardened OS. LineageOS and CyanogenMod aren't in that space. GrapheneOS preserves the standard privacy and security features and updates of the Android Open Source Project as a baseline. It greatly improves privacy and security with major privacy and security features along with much better privacy/security updates. It keeps up with the major OS updates including having a release based on Android 17 since the day it was released (2026-06-16).

> Can someone explain this? I've used custom ROMs back in the day (Cyanogen!) but I'm not familiar with GrapheneOS.

GrapheneOS is a production quality OS with around 15 people paid to work on it. It's not a hobbyist project. We've never used the term custom ROM since it isn't accurate and propagates misconceptions. It's best to avoid it.

> The article mentions that an abuser could put spyware on your phone? Is that a realistic scenario?

Yes, stalkerware is very common and there are a bunch of apps marketed for this purpose. It's helpful to get a new phone set up from scratch without the same accounts or automatically restoring any data on it. This can be a GrapheneOS phone but it doesn't particularly need to be. It's not GrapheneOS recommending itself for this purpose. There are an assortment of privacy and security features relevant to this in standard Android 17 and in the features added by GrapheneOS but nothing essential to this. GrapheneOS makes sense as a general choice for a new phone for many people due to being a highly usable, compatible, private and secure device but we're not specifically recommending it for being who are victims of stalkerware ourselves.