For years I have been reporting to you about numerous scams involving airline tickets.  Delta Airlines is  now reporting a scam where the targeting victim of the scam receives a a Facebook request purporting to be from Delta asking for SkyMiles numbers and other personal information.  This information is used by the scammer for purposes of identity theft.
TIPS
Neither Delta nor any of the other airlines will contact you through Facebook and ask for personal information or account information.  Delta and the other airlines will only ask for your account information if you go to their secure website or if you contact them in order to verify your identity.