AppRiver researchers are warning of new spam e-mails that pose as messages from the IRS, the Federal Reserve, and the Electronic Payments Association (NACHA).

"The rogue emails use different tricks to lure users to links that distribute a version of the notorious ZeuS banking trojan, usually masked as a pdf file," writes Softpedia's Lucian Constantin. "The fake IRS emails, which according to AppRiver account for the majority of the recent ZeuS spam, bear a subject of 'Unreported/Underreported Income.'"

"The messages encourage recipients to download a tax statement," Constantin writes. "The malicious files are hosted on multiple domains including irs-report-file.com, irs-tax-reports.com, federal-taxes.us, irs-alerts-report.com, and files-irs-pdf.com."

Go to "New IRS, Federal Reserve and NACHA Spam Emails Distribute Zeus" to read the details.

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