Invalidating Privacy
Lily Hay Newman does a deep dive on Verifications.io exposure of 809 million records online in a publicly accessible MongoDB database.
The article is informative in that it goes beyond how these millions of exposed records were found two security researchers, to how email advertising works, what a 'validation' firm is, and how those emails addressed personally to you arrive in your inbox despite you're never having heard of or cross-passed with the sender.
The store can be found at Wired.com.