The file was left entirely unprotected - no encryption, no password, no safeguards - just a plain text document holding millions of sensitive data entries.

Researchers have just confirmed the largest data breach ever, with 16 billion logins up for grabs. What started as a mysterious leak is now being called a blueprint for mass exploitation.

A newly discovered trove of stolen login credentials may represent the largest data breach in history, with billions of usernames and passwords now circulating online. Researchers with Cybernews uncovered more than 16 billion records spread across 30 databases,