On May 26, 2015, the Internal Revenue Service (“IRS”) announced that criminals illegally accessed data to retrieve the past tax returns of approximately 100,000 individuals through the IRS website. The criminals managed to use social security numbers, birth dates, street addresses, and “out of wallet” data (e.g., person’s first car, high school mascot.)
How was the personal information accessed?
During the months of February to May, attackers attempted to get access to tax information over 200,000 times through the IRS “Get Transcript” online application, which allows for viewing information from previous returns. The criminals managed to go through many steps of an authentication process to view these previous returns, exploiting data from breaches in the past. Recent breaches of companies like Target, Home Depot, JP Morgan Chase, Sony, and Anthem have allowed for personal information to be easily accessible to hackers. In addition, it is possible for identity thieves to get basic answers to security questions from individuals’ social media accounts and search databases. The IRS proceeded to send $50 million in refunds before detecting the criminal activity.
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