The IRS issued “an urgent alert” that a dangerous email scam is escalating.

The W-2 phishing scam – where cybercriminals send an official-looking email to employees in corporate payroll departments asking for copies of employees’ W-2 forms – is now also targeting school districts and nonprofits.

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The IRS says the scam has resulted in “large-scale theft of sensitive data.”

For information on how the scam operates, go to