I had Just came back last week from my last 6 month, then noticed the last few days there was a ban here and there.. I think they where testing when they caught those. When I seen them start to pop up I got very paranoid, and I decided to do something that would protect my main accounts but get me the account wide benefits of pets and ship upgrades. Monday I activated and older unused account that had not been banned, I used the account level 100 boost I got from preorder on a human and started grinding out rep and getting ship upgrades. I got most of the ship upgrades and pulled some cash out of my guild bank to get flying.
Yesterday, after the maintenance the game was being funky, booted me off several times asking for authenticator my guess is checking to see if it was me. Today I did not play it at all and it was banned today for 6 months. the other account where not touched.