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Ransomware Victim Technology

DAISEN

Ransomware attack by Ailock · Disclosed August 13, 2026 · 🇯🇵 Japan

daisen.co.jp

Date Disclosed
Aug 13, 2026
2026
Threat Group
Ailock
51 total victims
Country
🇯🇵 Japan
Industry
Technology

ThreatAI Analysis

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

Ailock listed DAISEN on its dark web leak site on 13 August 2026, DAISEN is a leading manufacturer specializing in greenhouses, vinyl houses, and daylight architecture.

About DAISEN

DAISEN is a leading manufacturer specializing in greenhouses, vinyl houses, and daylight architecture.

Source record: ransomware.live

About the Ailock group

AiLock is a ransomware operation that emerged in early 2025, marketing itself as AI-assisted ransomware using a hybrid ChaCha20/NTRUEncrypt encryption scheme and double-extortion tactics, actively recruiting affiliates and threatening regulatory reporting if ransoms are unpaid. Ailock has listed 51 victims since April 2015.

Incident Analysis

DAISEN was targeted by Ailock ransomware, one of the most active ransomware groups in our database with 51 confirmed victims globally. The attack was disclosed on August 13, 2026, when DAISEN appeared on the group's dark web leak site.

DAISEN is based in Japan , operating in the Technology sector. Japan ranks #11 globally for ransomware attacks, with 268 victims in our database.

Sector context: Technology companies hold intellectual property, customer data, and source code — all highly valuable assets. A successful ransomware attack can also put downstream customers at risk through supply chain exposure.

Ailock 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 14, 2026 08:00 UTC.

Frequently Asked Questions

Was DAISEN attacked by ransomware?

Yes. DAISEN was listed as a victim of the Ailock ransomware group on August 13, 2026. The organisation is based in Japan and operates in the Technology sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked DAISEN?

DAISEN was attacked by Ailock ransomware. Ailock is one of the most active ransomware groups, having claimed 51 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the DAISEN ransomware attack occur?

The ransomware attack on DAISEN was disclosed on August 13, 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 DAISEN ransomware attack?

The specific data stolen from DAISEN 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 Technology organisation, DAISEN likely held source code, intellectual property, and customer data.

How can organisations protect against Ailock attacks?

To defend against Ailock 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.