Columbia University

Columbia University based in New York, New York, a educational institution entity reported a data breach to the Texas Attorney General. The breach was discovered on 2025-07-08 and reported on 2026-05-20. 161,544 Texas residents were affected. 3,067,242 individuals affected in total. Types of information involved: Name of individual;Address;Social Security Number Information;Driver’s License number;Government-issued ID number (e.g. passport, state ID card);Financial Information (e.g. account number, credit or debit card number);Health Insurance Information;Other;Date of Birth. Consumers were notified via U.S. Mail.

Columbia University filed a supplemental notice with the New Hampshire Attorney General regarding a cybersecurity incident initially reported on August 7, 2025. Unauthorized access occurred on or about May 16, 2025, resulting in the exfiltration of names, dates of birth, Social Security numbers, and financial/health information. The incident affected 11,111 New Hampshire residents. Columbia University provided 24 months of credit monitoring through Kroll and established a call center.

Columbia University notified the NH Attorney General of a cyber incident where an unauthorized third party accessed the network around May 16, 2025, and exfiltrated personal data including names, DOBs, and SSNs. The breach was detected on June 24, 2025. 2,340 New Hampshire residents were notified on August 7, 2025, and offered 24 months of credit monitoring.

Columbia University, a education sector entity reported a data breach to the Iowa Attorney General. The breach was reported on 2025-08-08.

Columbia University reported an external system breach (hacking) that occurred between May 16, 2025, and June 24, 2025. The breach was discovered on July 8, 2025. The incident affected 2,026 Maine residents. In response, Columbia University offered 24 months of complimentary credit monitoring and identity theft protection services through Kroll, LLC.

Columbia University, a education sector entity reported a other incident to the Washington Attorney General. The organization became aware of the incident on 2025-07-08 and filed notice on 2025-08-07. 54,075 Washington residents were affected. 30 days elapsed between awareness and notification. 53 days to identify the breach. 0 days to contain the breach.

Columbia University reported a data breach to the Indiana Attorney General. The breach occurred on 2025-05-16 and was reported on 2025-08-07. 4,078 Indiana residents were affected. 868,969 individuals affected in total.

Columbia University disclosed a cyber incident occurring on or about May 16, 2025, where an unauthorized third party accessed the network and exfiltrated files. The breach affected names, dates of birth, Social Security numbers, and financial/health information. Approximately 2,510 Rhode Island residents were identified as impacted. Columbia reported the incident to law enforcement, engaged external cybersecurity experts, and is offering two years of complimentary credit monitoring and identity restoration services through Kroll.

Columbia University reported a data breach to the Montana Attorney General. The breach was reported on 2025-08-07. The breach occurred on 06/24/2025. 686 Montana residents were affected.

Columbia University disclosed a cyber incident where an unauthorized third party accessed its network on or about May 16, 2025, and exfiltrated files. The breach affected names, dates of birth, Social Security numbers, and academic/financial data. The university reported the incident to law enforcement and offered two years of credit monitoring. Approximately 2,510 Rhode Island residents were identified as impacted.

Columbia University experienced unauthorized access to its network starting May 16, 2025, discovered on June 24, 2025. An external actor exfiltrated files containing names, SSNs, DOBs, academic history, and some health/financial aid data. Patient records were not affected. The university engaged forensic experts, notified law enforcement, and is offering credit monitoring.

Columbia University notified South Carolina residents of a cyber incident where an unauthorized third party accessed the network on or about May 16, 2025, and exfiltrated files. Data included names, DOBs, SSNs, and academic/financial/health info. No patient records were affected. Columbia reported to law enforcement, engaged external experts, and offers 2 years of credit monitoring via Kroll.

Columbia University reported a data breach to the Oregon Attorney General. The breach was reported on 2025-08-07. The breach occurred during 5/16/2025 - 6/24/2025. The breach was discovered on 7/8/2025. 868,969 individuals were affected. Notice was sent on 8/7/2025.