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