I have notice a signification data usage on my pi even when I am not using it. this can be a problem as I am using a IOT sim card with a small cap.
I have setup iftop and monitored the traffic for a couple hours. here are few of the connections my pi had that I have no idea why. during that time my was not supposed to anything.
Would anyone be able to shed some light on those connections and confirm if those might be reason for the high data usage.