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Cyber Threat
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Ransomware victim Education

yalebooks.yale.edu

Listed by Scarlettgroup on · organisation based in United States

yalebooks.yale.edu

Disclosed
Oct 8, 2026
Leak-site listing date
Threat group
Scarlettgroup
1 victims listed
Country
United States
#1 most targeted
Sector
Education

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Scarlettgroup. Figures and technique mappings are quoted from the source data, not inferred.

Scarlettgroup listed yalebooks.yale.edu on its dark web leak site on 8 October 2026; the education sector operator is based in the United States.

About the Scarlettgroup group

Scarlettgroup has listed 1 victims since October 2026.

Incident analysis

yalebooks.yale.edu was listed by Scarlettgroup ransomware, a group with 1 victims recorded in this database. The listing appeared on the group's leak site on October 8, 2026.

yalebooks.yale.edu is based in United States and operates in the Education sector. United States ranks #1 worldwide for ransomware disclosures, with 10,002 victims in this database.

Sector context. Educational institutions often have under-resourced IT security teams and hold large amounts of student and faculty personal data, making them attractive targets for ransomware groups.

Scarlettgroup typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was yalebooks.yale.edu attacked by ransomware?

Yes. yalebooks.yale.edu was listed as a victim of the Scarlettgroup ransomware group on October 8, 2026. The organisation is based in United States and operates in the Education sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked yalebooks.yale.edu?

yalebooks.yale.edu was attacked by Scarlettgroup ransomware. Scarlettgroup is one of the most active ransomware groups, having claimed 1 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the yalebooks.yale.edu ransomware attack occur?

The ransomware attack on yalebooks.yale.edu was disclosed on October 8, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the yalebooks.yale.edu ransomware attack?

The specific data stolen from yalebooks.yale.edu has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Education organisation, yalebooks.yale.edu likely held student and faculty personal data and academic records.

How can organisations protect against Scarlettgroup attacks?

To defend against Scarlettgroup and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.