My MacBook Pro, High Sierra downloaded 13G last night while asleep
Solution 1:
It was touristd
which restarts every few seconds and downloads more than 10M by minute.
I do not know what it's doing, I tried to disable every Internet related option, but it kept turning on.
$ launchctl unload /System/Library/LaunchAgents/com.apple.touristd.plist
/System/Library/LaunchAgents/com.apple.touristd.plist: Operation not permitted while System Integrity Protection is engaged
Reboot "Recovery OS"
csrutil enable --without fs --no-internal
Then reboot normally and
$ sudo mkdir /backup
Password:
$ sudo mkdir /backup/System
$ sudo mkdir /backup/System/Library/
$ sudo mkdir /backup/System/Library/LaunchAgents/
$ sudo mv /System/Library/LaunchAgents/com.apple.touristd.plist /backup/System/Library/LaunchAgents/
$ ll /backup/System/Library/LaunchAgents/com.apple.touristd.plist
-rw-r--r-- 1 root wheel 897 Mar 28 03:55 /backup/System/Library/LaunchAgents/com.apple.touristd.plist
Reboot "Recovery OS"
csrutil enable