I got such an email.
It is not a ban, it is an account warning.
When my char was in her 30`s I flew a couple of times to Ilum to collect Lockboxes for an hour or so, that was before they removed all nodes from Ilum 3 days ago. I guess that nets you about 40-50k per hour with other people in the zone and a rather slow respawn rate. I was one of many with slicing over 340 so it was no problem to open up those boxes (there are no mobs, as Ilum is a pvp zone)
Yesterday I got an email telling that I broke the Tos: (got it in german)
"You collected Lockboxes on Ilum even though your character was below the advised level for that planet. Through that your account was able to gather credits and items which are not meant for lower level characters (under level 40)
Ilum is a level 50 zone which is made clear inside the game. By ignoring that warning your account was shown to be willing to exploit the game.
Since you infringed upon the Tos, we will immediately put a warning on your account."
This is wrong on so many levels that it actually puts me off playing the game which I like.