Equifax data breach FAQ: What happened, who was affected, what was the impact?

In March 2017, personally identifying data of hundreds of millions of people was stolen from Equifax, one of the credit reporting agencies that assess the financial health of nearly everyone in the United States.

As we’ll see, the breach spawned a number of scandals and controversies: Equifax was criticized for everything ranging from their lax security posture to their bumbling response to the breach, and top executives were accused of corruption in the aftermath. And the question of who was behind the breach has serious implications for the global political landscape.

How did the Equifax breach happen?

Like plane crashes, major infosec disasters are typically the result of multiple failures. The Equifax breach investigation highlighted a number of security lapses that allowed attackers to enter supposedly secure systems and exfiltrate terabytes of data.

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