2019 MongoDB — 275M records, unsecured databases
Data compromised
Various PII depending on database; names, emails, phone numbers
Technical writeup
Multiple unsecured MongoDB databases exposed approximately 275 million records in 2019. The databases had no authentication, allowing anyone to access and download the data. This was part of a broader trend of misconfigured NoSQL databases being left exposed.
Root cause
Unsecured database; no authentication; poor security