21CTO

Dec 13, 2019 · Information Security

What Happens When an Elasticsearch Cluster Exposes 2.7 Billion Emails?

A massive Elasticsearch data breach revealed over 2.7 billion email addresses, 1 billion passwords, and hundreds of thousands of personal documents, highlighting how misconfigured cloud storage on AWS S3 can lead to large‑scale exposure of sensitive information and underscore the need for robust cloud security practices.