Real World CyberSecurity Attacks

Equifax Data Breach (2017)

Impact: 159 million records

Hackers exploited an unpatched Apache Struts vulnerability in Equifax’s web portal, gaining

access to sensitive data like Social Security numbers, birth dates, and addresses. They moved

through the network undetected and stole massive amounts of personal information.

The breach cost Equifax over $1.7 billion in legal fees, fines, and security improvements.

Lesson: Failing to apply security patches can lead to large-scale attacks and severe financial

damage.

Lincoln College Ransomware Attack (2021–2022)

A 157-year-old college in Illinois was hit by a ransomware attack that blocked access to

essential recruitment, retention, and fundraising data.

Although the school paid under $100,000 to regain access, the delay revealed major enrollment

and financial shortfalls. Unable to secure the $50 million needed to stay open, Lincoln College

ultimately shut down in 2022.

Lesson: Ransomware can severely disrupt operations and shut down institutions that rely

heavily on access to their data systems.

Facebook Data Breach (2018)

Hackers exploited a flaw in Facebook’s “View As” feature, stealing access tokens that let them

take over accounts. Data from 30 million users was exposed, including names, contact info,

and detailed profile information.

Lesson: Even a simple feature bug can expose millions of users, proving the importance of

rapid patching and strong internal security controls.