yes the auth did prevent him from changing any account info but i could not log into my account because my email and pw were changed via origin, and an EA rep on tech support confirmed that changing my origin inf would change my swtor info. and bioware did not lock my account i called them and had to ask them to lock it.
i am relatively tech savvy, i dont go to gold websites or respond to phishing emails let alone even open them, ive had kaspersky AV for several years now and keep it updadted daily, did several full scans over the last few days and notheing.
as others have pointed out my point isnt that i got hacked its that theres a workaround to change the username and pw on a account, granted they cannot acces any other info they can still lock you out