> Modern browsers are set to upgrade automatically in the background, without notifying the user. My browser isn't; I use the Debian Firefox package and update

> Modern browsers are set to upgrade automatically in the background, without notifying the user. My browser isn't; I use the Debian Firefox package and update it on my schedule. > If you're paranoid, you can self-host your own Sync server Only if you host it locally; if you host it at a VPS/dedicated-system provider then you're trusting that provider never to break into your system. It's bad social hygiene to develop systems which are breakable.