Yale University Data Breach History

This page tracks the Yale University data breach history and cybersecurity incidents affecting Yale University (United States). BreachHistory currently indexes 8 publicly disclosed or catalogued incidents spanning 2007 through 2018, with approximately 259 thousand records reported as exposed across all indexed events. These totals may include overlapping datasets or third-party estimates and should not be interpreted as unique affected users.

The Yale University breach timeline includes major data breaches, cyber attacks, data leaks, credential exposures, API abuse, and other security incidents. Each incident provides details on the estimated records exposed, attack method, affected data types, and supporting public sources. Currently, 0 incidents are company-confirmed.

Largest Yale University Data Breaches

The largest indexed incidents include the 2008 — Yale University: Information on this security breach is provided by…, the 2011 — Yale University: The names and Social Security numbers of 43,000…, and the 2010 — Yale University: Accidentally published, 43K records, along with additional historical incidents involving exposed passwords, public databases, and large-scale data scraping. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by Yale University or a regulator. Below is the list of large data breaches:

• 2008 2008 — Yale University: Information on this security breach is provided by… — about 119.0K records exposed · Catalogued incident
• 2011 2011 — Yale University: The names and Social Security numbers of 43,000… — about 43.0K records exposed · Catalogued incident
• 2010 2010 — Yale University: Accidentally published, 43K records — about 43.0K records exposed · Catalogued incident
• 2010 2010 — Yale University: Data breach reported, 40K records — about 40.0K records exposed · Catalogued incident
• 2007 2007 — Yale University: Social Security numbers for over 10,000 current and… — about 10.2K records exposed · Catalogued incident
• 2012 2012 — Yale University: Hackers accessed at least one Yale database and… — about 1.2K records exposed · Catalogued incident
• 2018 2018 — Yale University: Location of breached information: Unauthorized… — about 1.1K records exposed · Catalogued incident
• 2010 2010 — Yale University: Location of breached information: Theft Business… — about 1.0K records exposed · Catalogued incident

What Information Was Exposed?

Depending on the incident, exposed data may include email addresses, passwords, phone numbers, names, profile information, account identifiers, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.

Yale University Data Breach 2026

At the time of this update, no Yale University data breach has been catalogued for 2026. New incidents are added as official disclosures, regulatory filings, or credible cybersecurity reports become available.

What To Do If You Were Affected

If you believe your account may have been involved in a Yale University data breach, change any reused passwords, enable multi-factor authentication (MFA), monitor your account for suspicious activity, and be cautious of phishing emails or fake breach notifications.

This Yale University breach history is maintained by BreachHistory using public disclosures, regulatory filings, security research, and clearly labelled third-party claims. For the complete breach timeline, records exposed, incident details, and AI Breach Risk Score, explore the sections on this page.