Sorry, you need to enable JavaScript to visit this website.

CyberScout is the nation’s premier consultative provider of identity and data risk management, resolution and education services.

Nearly One Billion Emails Exposed in Data Breach

Nearly One Billion Emails Exposed in Data Breach
April 1, 2019
Nearly One Billion Emails Exposed in Data Breach

The email addresses and personal information of 982 million people were compromised in a leak from an unsecured database.

The database belonged to, an “email validation service” that aggregates and sells information about the validity and personal data associated with email lists. Security researcher Bob Diachenko found the information in an unsecured 150GB-sized MongoDB database.

“This is perhaps the biggest and most comprehensive email database I have ever reported. Upon verification I was shocked at the massive number of emails that were publicly accessible for anyone with an internet connection. Some of the data was much more detailed than just the email address and included personally identifiable information (PII),” wrote Diachenko in a blog announcing his findings.

The leaked data consisted primarily of email addresses, but several million records also included owner names, social media account information, phone numbers, birthdates, and mailing addresses, as well as email server information, keywords to avoid in emails, and IP addresses to blacklist.  

After confirming the data, Diachenko brought it to the company’s attention. initially took the database offline, but now appears to have ceased operations entirely.

Offer 24/7 CyberScout Protection

CyberScout's partnership options help you safeguard the identity and privacy of your policyholders, customers, members and employees. Discover how a customized program can help build brand loyalty, customer retention, and quickly generate long-term recurring revenue.

Get Started