The 773 Million Record "Collection #1" Data Breach
Troy Hunt
JANUARY 16, 2019
I've written before about what's involved in verifying data breaches and it's often a non-trivial exercise. The original intention of it was to provide a data set to people building systems so that they could refer to a list of known breached passwords in order to stop people from using them again (or at least advise them of the risk).
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