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Published signals
currently linked to this company
Company intelligence
Ynhh cybersecurity incidents and threat signals
ynhh.org
This company page brings together public reporting currently associated with Ynhh. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
Company links
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Last 28 days
recent published signals
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Last 90 days
recent published signals
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High or critical
confidence classifications
June 26, 2026
Latest report
most recent published signal
Company signals
All published signals involving Ynhh
Yale New Haven Health System Data Breach
Detected on March 8, 2025, and reported to the HHS' Office for Civil Rights on April 11, 2025, with individual notification letters starting April 14, 2025, this breach affected 5.5 million individuals. Hackers accessed and exfiltrated files containing patient information from the network. Compromised data included names, dates of birth, addresses, phone numbers, email addresses, race/ethnicity, Social Security numbers, and medical record numbers.
FAQ
Questions about Ynhh cybersecurity reporting
What does the Ynhh page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Ynhh.
Does every mention of Ynhh 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.