For the past few weeks I'm getting posts similar to below every day, sometimes multiple times a day.  Be careful, seems legit.  But all have one theme - they're willing to email their tax returns.

"I obtained your contact information from one of your online postings I am a principal of an elementary school I am in need of your services for my 2021Tax return  and I can send you a copy of my 2020 tax return to go over it, in PDF let me know how much it will cost me Thanks Regards"

or

Hello, thank you for taking the time to respond, I have attached my prelim tax docs as requested, Kindly let me know if you need anything else.  Please let me know if you have any more questions after reviewing them.  Looking forward to working with you.