I just received a text from this number also. Text said "Hello Mike". I have no idea who this number belongs to. If it helps, I live in the Dallas, TX area, and my area code is 972.
http://www.andersoncooper.com/2012/05/16/bewa ... ity-theft-scam/
Tighten up the security on your accounts and don't click unknown links. If they've told you their Yahoo ID, report it to Yahoo abuse.