A historic cyber breach has exposed 16 billion passwords, marking what cybersecurity pros are calling the largest data leak in internet history.
“This is not just a leak – it’s a blueprint for mass exploitation,” said researchers who’ve been tracking the breach since early 2025.
Cybernews researcher Vilius Petkauskas revealed the hack involved “30 exposed datasets containing from tens of millions to over 3.5 billion records each.” These included logins for platforms like Google, Apple, Facebook, GitHub, Telegram, and even some government services.
Lawrence Pingree of Dispersive warned that stolen credentials end up on the dark web, giving cybercriminals easy access to commit identity theft, fraud, and blackmail.
“This isn’t just old breaches being recycled,” experts said. “It’s fresh, weaponizable intelligence at scale.”
George McGregor from Approov noted the fallout could lead to “a cascade of potential cyberattacks and significant harm to individuals and organizations.”
Security expert Darren Guccione emphasized how easily sensitive data can be exposed, pointing to careless online habits. “Just how easy it is for sensitive data to be unintentionally exposed online,” he said.
Former NSA specialist Evan Dornbush cautioned against password reuse: “If an attacker steals a password from one database and the individual has reused it elsewhere, then the attacker can gain access to those accounts as well.”
Javvad Malik from KnowBe4 added, “Choose strong and unique passwords, and implement multi-factor authentication wherever possible.”
Experts urge users to use password managers and dark web monitoring tools to stay protected.
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