A hidden URL allows scrapers to step through the public profiles of all Gravatar users. Peter disagrees with Mike and Jon over whether this is a hack or not.
https://www.bleepingcomputer.com/news/security/online-avatar-service-gravatar-allows-mass-collection-of-user-info/
Hosts:
Peter Lowe (@pgl)
Jon Cohen (@jonnisec)
Mike Sutton (@zenmike)