New York City Health & Hospitals Data Breach History

This page tracks the New York City Health & Hospitals data breach history and cybersecurity incidents affecting New York City Health & Hospitals. BreachHistory currently indexes 3 publicly disclosed or catalogued incidents spanning 2010 through 2026, with approximately 15.5 million 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 New York City Health & Hospitals 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, while 2 remain unverified claims pending independent verification.

Largest New York City Health & Hospitals Data Breaches

The largest indexed incidents include the 2026 NYC Health + Hospitals — LeakNet 11TB / 12M claim (unverified), the 2026 NYC Health + Hospitals — third-party vendor breach; PHI, biometrics, 1.8M+ (N…, and the 2010 — New York City Health & Hospitals: Lost / stolen device, 1.7M records. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by New York City Health & Hospitals or a regulator. Below is the list of large data breaches:

• 2026 2026 NYC Health + Hospitals — LeakNet 11TB / 12M claim (unverified) — about 12.0M records exposed · Unverified claim
• 2026 2026 NYC Health + Hospitals — third-party vendor breach; PHI, biometrics, 1.8M+ (Nov 2025–Feb 2026) — about 1.8M records exposed · Unverified claim
• 2010 2010 — New York City Health & Hospitals: Lost / stolen device, 1.7M records — about 1.7M records exposed · Catalogued incident

What Information Was Exposed?

Depending on the incident, exposed data may include names, physical addresses, health and medical (PHI) records, government ID documents, profile information, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.

New York City Health & Hospitals Data Breach 2026

At the time of this update, BreachHistory catalogues 2 2026 incidents related to New York City Health & Hospitals. Most recent entry: 2026 NYC Health + Hospitals — third-party vendor breach; PHI, biometrics, 1.8M+ (Nov 2025–Feb 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 New York City Health & Hospitals 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 New York City Health & Hospitals 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.