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DataStructures / System Design

Explain about EquiFax 2017 security incident.

In July 2017, Equifax suffered a breach, disclosing 150 million customer records. The exploit was due to a known vulnerability in the Apache struts2 library. Failure to patch quickly placed Equifax and its customers at risk.

From the operational perspective, patching can destabilize production systems and lead to outages however from security perspective, "patch often" is the motto. Security patches remediate known vulnerabilities that provide an easy means for attackers to exploit products and services.

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