Not sure if this one's targeted but I just received a newsletter from Qantas referring to the introduction of 2-factor authentication. After clicking on the update details button, adding a mobile number, and confirming, they advised that I will receive 2000 Qantas points in a few weeks time.
Here's the link from the email
https://www.qantaspoints.com/your-profile?alt_cam=au:n:n:edm…
Updated link
Thanks! Got 2,000 free points!