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Cyber Threat
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Ransomware victim Professional Services

CRESA

Listed by Vortex on · organisation based in United States

Disclosed
Nov 10, 2026
Leak-site listing date
Threat group
Vortex
14 victims listed
Country
United States
#1 most targeted
Sector
Professional Services

ThreatAI analysis

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

About the Vortex group

Vortex has listed 14 victims since September 2026.

Incident analysis

CRESA was listed by Vortex ransomware, a group with 14 victims recorded in this database. The listing appeared on the group's leak site on November 10, 2026.

CRESA is based in United States and operates in the Professional Services sector. United States ranks #1 worldwide for ransomware disclosures, with 10,481 victims in this database.

Sector context. Organisations in this sector hold valuable data and operational systems that ransomware groups seek to exploit for financial gain through encryption and data exfiltration.

Vortex 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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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 CRESA attacked by ransomware?

Yes. CRESA was listed as a victim of the Vortex ransomware group on November 10, 2026. The organisation is based in United States and operates in the Professional Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked CRESA?

CRESA was attacked by Vortex ransomware. Vortex is one of the most active ransomware groups, having claimed 14 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the CRESA ransomware attack occur?

The ransomware attack on CRESA was disclosed on November 10, 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 CRESA ransomware attack?

The specific data stolen from CRESA 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 Professional Services organisation, CRESA likely held sensitive business data, client information, and operational records.

How can organisations protect against Vortex attacks?

To defend against Vortex 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.