It's "hilarious" how incompetent some companies are.
One background check firm used by a previous employer of mine sent me an email saying:
"Hi FireBeyond, doing a background check, just want to verify that all these details for you are correct:
full legal name, address, dob, full ssn, phone number, USCIS#..."
and then the kicker:
"and also want to make sure we have the correct email address for you"
Oh. You just sent all this shit to an email address and "oh, let us know if this your email address"?!?
Meanwhile, they've found my fiancee on FB and are messaging her out of the blue to "verify" she knows me (to be clear, this was meant to be a standard background check, not a security clearance or anything similar).
To their credit, that employer, when I told them all this, were as horrified as I was and fired them as their background check provider.