From: Bloomberg News via Detroit News

Chris Strohm, Michael Riley and Jordan Robertson

The vast cyber-attack in Washington began with, of all things, travel reservations.

More than two years ago, troves of personal data were stolen from U.S. travel companies. Hackers subsequently made off with health records at big insurance companies and infiltrated federal computers where they stole personnel records on 21.5 million people — in what apparently is the largest such theft of U.S. government records in history.

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