quick q (2)

Heya,

Strictly speaking, the account holder is responsible for any activity that happens on their account:

You are responsible for the activity on your EA Account; it's yours, don't share it. Your EA Account may be suspended or terminated if someone else uses it to engage in activity that violates this Agreement.

From: [EA] Terms of Service - Section 1: EA Account

If your account did get compromised, I highly recommend following the steps as outlined in this article to re-secure your account: [EA Help] - What to do if your EA Account was hacked

Now if you do get banned, you can still appeal the ban by following the steps from this article: [EA Help] - Get information on EA Account locks, bans, and suspensions
Whilst it may 'technically' fall under your responsibility per the Terms of Service, in the end the discretion lies with the TOS team in seeing whether or not the punishment were appropriate. So it's still worth to give appealing a shot if your account does get actioned.

I'd also like to recommend the EA Security Newsletter that gets published here on the forums every once a while. A lot of information are shared in those newsletters to give people some more insight in common scams, hacks and all types of information that helps with people to stay safe on the internet and keep their accounts secure.

You can find the latest version of the Newsletter here: EA Forums Online Security Newsletter - Volume 12 | EA Forums - 13059901 
There are also a ton of others you can find in the: EA Forums Info Hub | EA Forums