Yahoo (2013): In 2013, Yahoo suffered a monumental data breach affecting all 3 billion accounts. This incident led to severe reputational damage, decreased user trust, and financial losses, including a reduced sale price during its acquisition by Verizon, impacting the company’s long-term viability.

Facebook (2019): The 2019 Facebook breach exposed 540 million user records stored on an unsecured Amazon cloud server. This incident raised serious concerns about data privacy and security, leading to increased scrutiny from regulators and the public, and resulting in fines and user distrust.

Marriott International (2018): Marriott’s 2018 breach compromised around 500 million guest records, including sensitive personal information like names, addresses, and credit card details. The breach prompted lawsuits, regulatory scrutiny, and significant fines, leading to an urgent review of data protection practices within the hospitality industry.

Ashley Madison (2015): In 2015, Ashley Madison faced a massive data breach that leaked 12.7 GB of corporate emails and user data, exposing personal information of millions. The fallout included public humiliation for users, numerous lawsuits, and a lasting impact on the company’s reputation and operations.

Heartland Payment Systems (2008): Heartland Payment Systems experienced a data breach in 2008 that compromised 130 million payment records. This incident highlighted vulnerabilities in payment processing systems, leading to legal consequences, a loss of consumer trust, and a significant push for improved cybersecurity measures across the industry.

JBS (2021): In 2021, JBS paid $11 million in Bitcoin to hackers following a ransomware attack that disrupted its operations. The breach led to temporary shutdowns of beef plants in the US, causing significant financial losses and raising awareness about the need for stronger cybersecurity defenses in critical industries.

Other Breaches: Other significant breaches include Equifax (2017), which exposed the personal data of 147 million consumers, leading to lawsuits and regulatory actions; Aadhaar (2018), compromising sensitive information of over a billion Indians; and First American Financial Corporation (2019), exposing 885 million records, raising alarms about data security protocols in financial institutions.