All I've got are This post, translated from German -

Brellon -

03/04/2012, 06:05 AM | # 5 Rate
Hello NazgulKhamul,

As long as someone controls the characters themselves, contrary 'multiboxing' not against our Terms of Use. The description of the problems associated with multi-boxers, but they are very strange. We do not know why it might come as a behavior.

What mouse do you use? Is it for your mouse driver software?

To exclude files with errors, we would ask you to perform a repair if there is causing the strange behavior.

Is there anything else which is striking and is related to the faulty controller?

Thank you.
Brellon | BioWare Customer Service - Forum Support
And this one

Phillip_BW

03.08.2013 , 05:34 PM | #45 Quote
Personally I didn't realize /follow had been removed from WoW. It’s an interesting move on Blizzard’s part and (now that I ask internally) we are already looking at any possible negative aspects that might occur if multi-boxing within SWTOR was to become a ‘thing’. I'll be clear that certain ways of technically implementing multi-boxing are very much against the Terms of Service, so I would suggest erring on the side of caution and not depend on existing functionality staying static...

Phillip Holmes
SWTOR Head of Security
I haven't been able to find anything else that states one way or another that the rules have actually changed since that comment from a year ago.

It is always a good idea to contact a GM or Customer Service to check if you aren't sure.