2018 Unsecured database — 125M contacts, 9B data points
Data compromised
Names, email addresses, job titles, employers, company contact information, social media handles, phone numbers
Technical writeup
Security researcher Vinny Troia discovered Apollo.io's database containing 212 million contact listings was freely accessible online. The unsecured database exposed approximately 125 million email addresses and nine billion data points related to contacts and companies. The exposure occurred during/after system upgrades in July 2018.
Root cause
Unsecured database exposed to the internet; poor security configuration