“This is not just a leak—it’s a blueprint for mass exploitation,” researchers said. “With over 16 billion login records exposed, cybercriminals now have unprecedented access to personal credentials that can be used for account takeover, identity theft, and highly targeted phishing.”

Sixteen billion login credentials to a plethora of websites have been leaked since the beginning of 2025, researchers from Cybernews said this week.

An incredible 16 billion passwords have been leaked in what tech experts are calling the largest data breach ever.