Equifax

In one of the most impactful data breaches, Equifax, a major information solutions provider, suffered a cybersecurity incident affecting 143 million consumers in the U.S. This breach, discovered on July 29, 2017, exposed critical personal information, including names, Social Security numbers, birth dates, and addresses. This incident didn't just affect a significant portion of the U.S. population but also had international ramifications, with around 400,000 U.K. customers potentially affected. The final tally revealed a staggering total of 145.5 million exposed records. The breach highlighted the vulnerabilities in the handling of sensitive consumer data and the far-reaching consequences of such cyber attacks.

Source: https://www.trendmicro.com/vinfo/us/security/news/cyber-attacks/data-breach-101

"id": "equ950050824",
"linkid": "equifax",
"type": "Breach",
"date": "07/2017",
"severity": "100",
"impact": "5",
"explanation": "Attack threatening the organization’s existence"