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If you have not checked your credentials lately, now is the time.

A staggering 1.3 billion unique passwords and 2 billion unique email addresses surfaced online. This event is one of the largest exposures of stolen logins we have seen.

This is not the result of one major breach. Instead, Synthient, a threat intelligence firm, searched the open and dark web for leaked credentials. You may remember the company from its earlier discovery of 183 million exposed email accounts. This time, the scale is far larger.

AMERICA’S MOST-USED PASSWORD IN 2025 REVEALED

Where this huge trove came from

Most of the data comes from credential stuffing lists. Criminals pull these lists from old breaches and use them in new attacks. Synthient went further. Its f

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