Coming at the worst time for taxpayers trying to meet the April 18th tax filing deadline, security researchers have confirmed that IRS authorized tax e-filing vendor eFile.com has been infecting users with malware since at least March 17th.
Users on a Reddit forum first reported that they thought the website had been “hijacked” on March 17th. It turns out they were correct and researchers confirmed that an infected file called “popper.js” was being pushed out by all pages on the website.
eFile.com is not releasing much information regarding the attack, but an analysis as been written up by Johannes Ullrich at the SANS Institute.
Any eFile.com users who believe they have been impacted by this event is encouraged to contact eFile.com.
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