Ancestry (nov 7, 2015 – jan 1, 0)
Description:
In November 2015, an Ancestry service known as <a href="https://blogs.ancestry.com/ancestry/2017/12/23/rootsweb-security-update/" target="_blank" rel="noopener">RootsWeb suffered a data breach</a>. The breach was not discovered until late 2017 when a file containing almost 300k email addresses and plain text passwords was identified.
Added to timeline:
haveibeenpwned
Date: