Cyber Threat Intelligence
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Ransomware Victim Other

Corona Corporation

Ransomware attack by Metaencryptor · Disclosed August 23, 2026 · 🇯🇵 Japan

corona.co.jp

Date Disclosed
Aug 23, 2026
2026
Threat Group
Metaencryptor
25 total victims
Country
🇯🇵 Japan
Industry
Other

ThreatAI Analysis

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

Metaencryptor listed Corona Corporation on its dark web leak site on 23 August 2026, a technology company specializing in heating, cooling and hot water technologies.

About Corona Corporation

The company specializes in creating a comfortable home environment, focusing on heating, cooling and hot water technologies. It was founded at April 1937, and now have more than 2000 employee. Corona Corporation is stock listed, ticker 5909.T at Tokyo Stock Exchange (Standard)

Source record: ransomware.live

About the Metaencryptor group

MetaEncryptor is a ransomware group first observed in mid-2023, targeting medium-to-large enterprises in legal, technology, logistics, manufacturing, and finance sectors primarily in the UK, Europe, and Southeast Asia, using AES-256/RSA-2048 encryption and double extortion. Metaencryptor has listed 42 victims since August 2023.

Incident Analysis

Corona Corporation was targeted by Metaencryptor ransomware, one of the most active ransomware groups in our database with 25 confirmed victims globally. The attack was disclosed on August 23, 2026, when Corona Corporation appeared on the group's dark web leak site.

Corona Corporation is based in Japan , operating in the Other sector. Japan ranks #11 globally for ransomware attacks, with 266 victims in our 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.

Metaencryptor typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 8, 2026 22:00 UTC.

Frequently Asked Questions

Was Corona Corporation attacked by ransomware?

Yes. Corona Corporation was listed as a victim of the Metaencryptor ransomware group on August 23, 2026. The organisation is based in Japan and operates in the Other sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Corona Corporation?

Corona Corporation was attacked by Metaencryptor ransomware. Metaencryptor is one of the most active ransomware groups, having claimed 25 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Corona Corporation ransomware attack occur?

The ransomware attack on Corona Corporation was disclosed on August 23, 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 Corona Corporation ransomware attack?

The specific data stolen from Corona Corporation 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 Other organisation, Corona Corporation likely held sensitive business data, client information, and operational records.

How can organisations protect against Metaencryptor attacks?

To defend against Metaencryptor 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.