PayPal has 2FA, but if you enable it, you can no longer use their mobile app since it does not yet support 2FA. Or at least, it didn't support it the last time I used it.Actually, a lot of forums are business related and some forum accounts have high trust levels dealing in huge amounts of monetary trades. Security is very important and 2FA should be a standard imo. I just lost a few accounts (stolen by someone) because someone decided to call Indian support teams for this company and get it to them, 2FA might've made the process more complicated but it wasn't offered. Trust me when I say this, you only know that you should've worried more about security when you lose your account permanently.