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Company intelligence
Columbia cybersecurity incidents and threat signals
columbia.edu
This company page brings together public reporting currently associated with Columbia. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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June 26, 2026
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Based on all published signals currently linked to Columbia. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
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Columbia University Discloses Data Breach, Nearly 900,000 Individuals Affected
Columbia University announced a data breach where a hacker stole sensitive personal data, including Social Security numbers, contact details, academic records, financial aid data, and health insurance information, of approximately 868,969 individuals. The incident occurred in May 2025, with disclosure on August 7, 2025.
Columbia University Data Breach Exposes 868,969 Records
An unauthorized actor gained access to Columbia University's network on or about May 16, 2025, and exfiltrated files containing personal information of 868,969 individuals, including current and former students, applicants, and some employees. The compromised data included names, dates of birth, Social Security numbers, contact details, demographic information, academic history, financial aid-related information, insurance-related information, and certain health information. The incident was discovered following a technical outage on June 24, 2025, and notifications to affected individuals began in August 2025.
FAQ
Questions about Columbia cybersecurity reporting
What does the Columbia page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Columbia.
Does every mention of Columbia appear here?
No. A signal must contain a reliable company connection and meet the publication criteria; incidental or ambiguous mentions are excluded.
Why can the incident count change?
The page follows current published reporting. Counts change as new evidence is added, classifications are reviewed, or older signals leave the reporting window.