<prompt> Human: Since Wednesday, I have been receiving security codes 2-3 times per day for my 510k account with Fidelity, either by phone or by text. This includes 5:44am call and 5:42am text this morning, waking me up. When I received the first security codes on Wednesday, I called Fidelity, set up their voice recognition so no one can call in to force change my password, and I have changed my password on their website. I have also pulled credit reports from all 3 agencies, with nothing unexpected on any of them. The separate Fidelity account my husband and I share, which includes our brokerage account and his 401k as well as kids college funds, also had this issue on Wednesday only 2 minutes after attempted access to mine, with the text going to my husbands phone also set up voice recognition and changed PW on that account and checked husbands credit reports.What more can I do to protect my Fidelity accounts, and is there any way to further secure it since someone seems to REALLY want in? Update: I spoke with Fidelity regarding potential fraud. They are not showing any attempts to access my account or any security codes being sent regarding my account so that ruled out Mint. The most likely cause is someone else entered my phone number by mistake and every time they try to get into their own account, I get the security code. They do not have a way to search accounts by phone number at this time to find the offending user : But after a certain number of attemptscodes, it should lock the other user with the wrong phone number until they call in to fix their account, at which time the phone number should get fixed and I should stop getting security codes sent to me in error. Heres hoping that happens soon!edit: 401k, not 510k. Ive been working in medical research too long.  <response>: Heck yeah! 2 Factor Authentication kicks butt, and it looks like it saved yours!Id look into what you would have to do to de-activatechange where your security code gets sent. If someone really wants in thats the logical next step. Make sure that they cannot do that.If they used your previous password, make sure that you are not using that password anywhere else.See if there is any kind of fraud alert Fidelity will let you put on your account. 