"In March 2019, AMI released a statement responding to de Becker's column that the only source for their story on Bezos was Michael Sanchez, the brother of Bezos's girlfriend, and that there was "no involvement by any other third party whatsoever."[24] A year later, Michael Sanchez sued AMI, stating in court documents that when the National Enquirer first contacted him, they already had "raunchy text messages and nude selfies exchanged" by Bezos and Sanchez's sister. Michael Sanchez denied giving AMI explicit photos, and accused AMI of hacking Bezos's phone."
https://en.wikipedia.org/wiki/Jeff_Bezos_phone_hacking_incid...
I did not know about the part of the story involving the brother, I must have missed it at that time.