Maybe change your phone number on your accounts if you use mobile for 2 factor authentication.

Go to Experian & other credit rating companies and lock your credit rating. Get credit monitoring from one of them. Some credit card companies (like Capitol One) offer credit monitoring.

I got a call today ostensibly from AmEx. They had details on my account (including my most recent payment) and said they were calling about a questionable charge ($1200 at a Walmart in NY.) I bought the story and gave them my full credit card number and the last 4 of my SSN. I know better but they had some information, like my most recent payment, that made it seem credible.

I got suspicious and called AmEx from a separate line - which clarified that this was a scam. I cancelled my AmEx card immediately and put a fraud alert and freeze on my credit report. Is there anything else I can/should do to keep this from morphing into something worse? Thanks!!