Security Vulnerability Submission refused by EA
I am victim (and some other guys here on Reddit) by an (automated?) attack exploiting a vulnerability regarding EA accounts and validated email addresses.
Basically, if you change your account email address, your old address remains validated on EA database, anyone can create a new account using this address and it's not requiring any validation, the attacker can do any activity like playing online with cheats, scam, phishing without impact until its ban.
I reported the issue to https://www.ea.com/security/disclosure but I got an answer that it's not a security disclosure.
I also contested the ban (as I remain access to my old email address, I was able to reset the password and open the ticket), but it was refused, of course they do not even consider that it was a sec vulnerability.
So, be aware: If you change your EA email address, create a new account using your old address and let it abandon to not be used/exploited.