In March 2019, a spam operation known as "Intelimost" sent millions of emails appearing to come from people the recipients knew. Security researcher Bob Diachenko found over 3 million unique email addresses in an exposed Elasticsearch database, alongside plain text passwords used to access the victim’s mailbox and customise the spam.
Accounts breached: 3073409
Breached on: March 10, 2019
Exposed data: Email addresses and Passwords
Added on: April 02, 2019