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Corporate

49 of the 76 analyses in Data Breaches carry this tag. All 49 are scored against the four invariants; the matrix below is that evidence.

How this tag scores against the four invariants

BreachHSFPECEGRSCA
LinkedIn Password Breach
Marriott International Data Breach of 2018
Yahoo Data Breach August 2013
MGM Grand Data Breach - September 2023
Yum! Brands Ransomware Data Breach
SolarWinds Supply Chain Attack
Fujitsu Malware Attack 2024
Google Aurora Incident
Norsk Hydro Ransomware Attack - March 2019
2017 Equifax Data Breach
eBay Data Breach Analysis
Salt Typhoon Intrusions into U.S. Telecommunications Carriers (2024)
Heartland Payment Systems Data Breach
Microsoft Exchange Server Breach
TJX Companies Inc. Data Breach
Twitter 2020 Data Breach Incident
Conduent Business Services Data Breach (January 2025)
Discord Data Breach March 2023
National Public Data Breach of April 2024
Activision HR Data Breach 2023
PowerSchool Student Information System Data Breach (December 2024)
U-Haul Data Breach
23andMe Data Breach
Chick-fil-A Data Breach March 2023
MailChimp January 2023 Data Breach
Adobe 2013 Data Breach
Copay Cryptocurrency Wallet Data Breach
Norton Life Lock Credential Stuffing Data Breach
NotPetya Ransomware Attack
Google Fi Data Breach Linked to T-Mobile Incident
2016 Uber Data Breach
AdultFriendFinder Data Breach
ChatGPT Data Breach
MySpace Data Breach
Samsung Data Breach November 2023
Allianz Life Insurance Company of North America Data Breach (July 2025)
Qantas Airways Customer Data Breach (June 2025)
Tesla Massive Data Breach
T-Mobile January 2023 Data Breach
Sina Weibo Data Breach 2020
Yahoo Intellectual Property Theft
2014 Uber Data Breach
Facebook Data Breach 2019
Real Estate Wealth Network Data Breach
Pegasus Airlines Data Exposure
LinkedIn Data Scraping Incident
Alibaba Taobao Data Breach
First American Financial Corp Data Breach
Court Ventures (Experian) Data Breach

HSF · PEC · EGR · SCA — filled where the invariant would have prevented or contained the breach

075

Allianz Life Insurance Company of North America Data Breach (July 2025)

A threat actor used social engineering to access a third-party cloud-based CRM used by Allianz Life Insurance Company of North America and exfiltrated sensitive personal information. The incident affected approximately 1.5 million customers, financial professionals, and select employees, with exposed data potentially including names, addresses, dates of birth, Social Security numbers, email addresses, and phone numbers. The responsible threat actor or group was not confirmed, although the breach was linked in reporting to a broader campaign associated with ShinyHunters, Scattered Spider, and UNC6040.

074

Qantas Airways Customer Data Breach (June 2025)

An attacker socially engineered an overseas contact-centre agent into authorizing an attacker-controlled data-extraction application against the agent’s legitimate CRM access. Approximately 5.7 million unique Qantas customer records were affected, including names, email addresses, Frequent Flyer information and, for subsets, addresses, dates of birth, phone numbers, gender and meal preferences. Qantas said passwords, PINs, payment, financial, passport and Frequent Flyer login data were not accessed. The initial intruder attribution was not confirmed; later reporting identified Scattered Lapsus$ Hunters as the collective that reportedly published some records after extortion activity.

073

Conduent Business Services Data Breach (January 2025)

Contained by: EGR

Conduent Business Services discovered unauthorized access to a limited portion of its environment on January 13, 2025, after access that began on October 21, 2024. The actor exfiltrated client-associated files containing personal, medical, health-insurance, claims, and Social Security information; SafePay claimed responsibility and alleged theft of 8.5 terabytes, but the role and volume were not independently confirmed. Publicly reported impact reached at least 25 million people, while later HHS OCR figures and state reports remained inconsistent and unresolved.

072

PowerSchool Student Information System Data Breach (December 2024)

Prevented by: HSF

An unauthorized party used a compromised credential with password-only access to the PowerSource customer-support portal and exported student and teacher data from PowerSchool SIS environments. Exposed information varied by customer and could include names, contact details, dates of birth, addresses, SSNs or SINs, medical information, grades, parent or guardian data, and passwords. DOJ-related reporting placed the affected population at approximately 62 million individuals, although other reported figures were not reconciled. Matthew D. Lane later pleaded guilty to conduct related to the breach, while subsequent extortion attempts indicated that stolen data may have remained available.

070

Salt Typhoon Intrusions into U.S. Telecommunications Carriers (2024)

Prevented by: PEC, EGR

The China-linked Salt Typhoon cyber-espionage campaign compromised at least eight U.S. telecommunications providers, with a ninth operator subsequently identified, and affected providers in more than 20 other countries. Attackers accessed carrier infrastructure and surveillance-adjacent systems and collected customer call data, metadata, law-enforcement surveillance-request data, and selected private communications involving government and politically prominent individuals. The campaign exploited exposed and vulnerable network devices, compromised credentials, and trusted provider relationships; officials and congressional testimony reported that more than one million users may have been affected.

069

National Public Data Breach of April 2024

Prevented by: HSF

In April 2024, National Public Data experienced a significant breach that exposed Social Security Numbers, addresses, and phone numbers of hundreds of millions of Americans. This breach, attributed to a security lapse involving administrative credential exposure, allowed unauthorized access to up to 2.9 billion records. The threat actor identified as USDoD exploited this vulnerability, selling the compromised data on the dark web.

066

Fujitsu Malware Attack 2024

Prevented by: PEC, EGR

In March 2024, Fujitsu experienced a significant cybersecurity breach involving malware on its corporate network. The incident potentially exposed customer information, though there is no evidence of data misuse. The malware used sophisticated evasion techniques, indicating a high level of attacker skill, but the threat actors remain unidentified. The breach primarily affected Fujitsu’s operations in Japan, impacting 49 computers.

063

23andMe Data Breach

Prevented by: HSF

In December 2023, a data breach at genetic testing company 23andMe exposed the personal data of approximately 6.9 million users to unauthorized access. The breach, executed through credential stuffing, compromised user profiles and familial connections, leaving sensitive personal data vulnerable. It underscored the need for robust password practices and security measures such as multi-factor authentication.

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