Independent security analyst Randy Abrams says the site redirected some visitors to download a fraudulent update for Adobe Flash that, when clicked, would infect the user's computer with Malware.
Congressman Patrick Henry (R-N.C.) has since introduced legislation that would crack down on Equifax and other credit reporting companies and require them to stop using Social Security numbers.
Equifax has taken a customer help page on its website offline as its security team investigates another potential cyber breach.
The firm said it took down the link for credit report assistance temporarily "out of an abundance of caution". "When it becomes available or we have more information to share, we will".
According to the information he shared with Ars Technica, the fake Flash update conceals a file named MediaDownloaderIron.ex, which, according to VirusTotal, is detected as adware by only three AV solutions. Not only is the service free, but Credit Karma lets you access your credit scores and reports without charge as many times as you like.
The incident comes just over a month after Equifax disclosed a massive data breach in which hackers stole the personal information of more than 145 million US consumers. The latest claims reveal that after one of the largest data breaches ever, Equifax still may not have learned its lesson about providing proper security for its customers. The hack has led to multiple federal and state investigations and the departure of the company's 12-year chief executive.
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