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Cyber Threat
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Ransomware victim Hospitality and Tourism

Formosa Chang

Listed by Nova on · organisation based in Taiwan

fmsc.com.tw

Disclosed
Apr 28, 2025
Leak-site listing date
Threat group
Nova
194 victims listed
Country
Taiwan
#15 most targeted
Sector
Hospitality and Tourism

ThreatAI analysis

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

About the Nova group

Nova (formerly RALord) is a ransomware-as-a-service (RaaS) group that encrypts victims’files and uses double-extortion tactics to pressure organizations into paying for decryption and data non-disclosure. Nova has listed 178 victims since March 2025.

Incident analysis

Formosa Chang was listed by Nova ransomware, a group with 194 victims recorded in this database. The listing appeared on the group's leak site on April 28, 2025.

Formosa Chang is based in Taiwan and operates in the Hospitality and Tourism sector. Taiwan ranks #15 worldwide for ransomware disclosures, with 204 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.

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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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

Yes. Formosa Chang was listed as a victim of the Nova ransomware group on April 28, 2025. The organisation is based in Taiwan and operates in the Hospitality and Tourism sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Formosa Chang?

Formosa Chang was attacked by Nova ransomware. Nova is one of the most active ransomware groups, having claimed 194 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Formosa Chang ransomware attack occur?

The ransomware attack on Formosa Chang was disclosed on April 28, 2025. 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 Formosa Chang ransomware attack?

The specific data stolen from Formosa Chang 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 Hospitality and Tourism organisation, Formosa Chang likely held sensitive business data, client information, and operational records.

How can organisations protect against Nova attacks?

To defend against Nova 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.