Security question: every 3h traffic 250MB

Hi community,

on my internet router, I observe that my HA creates traffic to the internet (upload>download) of around 250MB exactly every 3 hours.
Does this point to any well-known behaviour? Or is this an indication of a security breach?

Thanks,

Do you run a speedtest or anything like that?

Yes. Seems to correlate to the Supervisor system checks.

If you go to Settings > System > Logs and select Supervisor in the top right, you should see the following every 3 hours:

2025-06-29 06:29:30.400 INFO (MainThread) [supervisor.store.git] Update add-on /data/addons/core repository from https://github.com/home-assistant/addons
2025-06-29 06:29:30.403 INFO (MainThread) [supervisor.store.git] Update add-on /data/addons/git/5c53de3b repository from https://github.com/esphome/home-assistant-addon
2025-06-29 06:29:30.404 INFO (MainThread) [supervisor.store.git] Update add-on /data/addons/git/d5369777 repository from https://github.com/music-assistant/home-assistant-addon
2025-06-29 06:29:30.406 INFO (MainThread) [supervisor.store.git] Update add-on /data/addons/git/a0d7b954 repository from https://github.com/hassio-addons/repository
2025-06-29 06:29:30.409 INFO (MainThread) [supervisor.store.git] Update add-on /data/addons/git/45df7312 repository from https://github.com/zigbee2mqtt/hassio-zigbee2mqtt
2025-06-29 06:29:31.811 INFO (MainThread) [supervisor.store] Loading add-ons from store: 85 all - 0 new - 0 remove
2025-06-29 06:29:43.032 INFO (MainThread) [supervisor.homeassistant.api] Updated Home Assistant API token

250mb is a bit too much for just a check for updates.

It’s doing more than checking for updates. It’s updating all addon repositories and the API token. It’s also doing some other stuff which I left out from the log extract above.

Either way, it’s not a security breach.

It’s still a bit too much with 250Mb, but ai agree it is most likely not a security breach.y guess is still that it is one of your integrations that does it.