That's what 2FA is there for, but you still get the annoying e-mail notifications for attempted sign-ins.
Make sure to weigh the pros and cons when you pick your username on the internet.
A dedicated e-mail filter to limit the mental attrition might not be the worst idea.
The @tommy on Twitter was a dev at Gameloft who gets constantly harassed in his mentions to give it up. I had a similar problem on Instagram. I've mostly stopped using it, but when I did post and had an open profile I constantly got comments offering money for my username.
Eventually someone set up a follower bot on my account and I was getting hundreds of new followers a day. I made my profile private and don't post anymore, but it's still hundreds of new follower requests per day.
Eventually I went with a much longer username and the problem went away.
I don't know if this is related (probably not), but fun fact: Fidelity lets you log in to your account over the phone using numbers[0] -- one per character. Yep, passwords too.
> Use your telephone keypad to convert the letters to numbers. There is no case sensitivity. Substitute an asterisk (*) for all special characters. Here's an example:
> To enter a username, e.g., Smith123, press or say 7-6-4-8-4-1-2-3
> To enter a password, e.g., Lucky1$23, press or say 5-8-2-5-9-1-*-2-3
My 6 letter username mapped to numbers that corresponded to up to 4^6 accounts. That's really bad but not nearly as bad as what they're doing to passwords.
The longer username is both worse and better. Worse because it matches way way more possible accounts and better because (I presume) it matches fewer actual accounts so it gets fewer failed attempts. That's my guess, anyway.
Edit: it is possible that they only allow one account per "folded" username. That increasing the username length resolved the problem immediately suggests otherwise, but like I said, I dunno. I have no insight into their systems.
0: https://www.fidelity.com/customer-service/faqs-managing-your... look for "telephone services"