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Cyber Threat
CTI Academy Sponsor CTI Academy
Ransomware victim Financial Services

OCI International Holdings

Listed by Ransomhouse on · organisation based in Hong Kong

www.oci-intl.com

Disclosed
Oct 23, 2025
Leak-site listing date
Threat group
Ransomhouse
159 victims listed
Country
Hong Kong
#32 most targeted
Sector
Financial Services

ThreatAI analysis

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

About the Ransomhouse group

RansomHouse is a double-extortion RaaS operation active since late 2021, attributed to the threat actor "Jolly Scorpius," targeting over 120 organizations across healthcare, finance, transportation, and government, recently upgrading to a multi-layered dual-key encryption architecture. Ransomhouse has listed 212 victims since June 2021.

Incident analysis

OCI International Holdings was listed by Ransomhouse ransomware, a group with 159 victims recorded in this database. The listing appeared on the group's leak site on October 23, 2025.

OCI International Holdings is based in Hong Kong and operates in the Financial Services sector. Hong Kong ranks #32 worldwide for ransomware disclosures, with 108 victims in this database.

Sector context. Financial sector organisations are targeted for their access to funds, sensitive financial data, and the reputational damage a public breach can cause. Regulatory requirements also increase recovery costs.

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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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

Yes. OCI International Holdings was listed as a victim of the Ransomhouse ransomware group on October 23, 2025. The organisation is based in Hong Kong and operates in the Financial Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked OCI International Holdings?

OCI International Holdings was attacked by Ransomhouse ransomware. Ransomhouse is one of the most active ransomware groups, having claimed 159 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the OCI International Holdings ransomware attack occur?

The ransomware attack on OCI International Holdings was disclosed on October 23, 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 OCI International Holdings ransomware attack?

The specific data stolen from OCI International Holdings 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 Financial Services organisation, OCI International Holdings likely held financial records, client data, and transaction histories.

How can organisations protect against Ransomhouse attacks?

To defend against Ransomhouse 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.