Hacking of Tax Returns More Extensive Than First Reported, I.R.S. Says

The New York Times: WASHINGTON — The Internal Revenue Service said Monday that hackers had gained access to the tax returns of more than 300,000 people, a far higher number than the agency had reported previously.

In the coming days, the I.R.S. will send 220,000 letters to taxpayers whose returns were probably viewed by the hackers, the agency said.

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