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on-us

Ransomware attack by Gunra · Disclosed June 30, 2026 · 🇭🇰 Hong Kong

on-us.com

Date Disclosed
Jun 30, 2026
2026
Threat Group
Gunra
49 total victims
Country
🇭🇰 Hong Kong
Industry
Technology

Incident Analysis

on-us was targeted by Gunra ransomware, one of the most active ransomware groups in our database with 49 confirmed victims globally. The attack was disclosed on June 30, 2026, when on-us appeared on the group's dark web leak site.

on-us is based in Hong Kong , operating in the Technology sector. Hong Kong ranks #31 globally for ransomware attacks, with 90 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.

Gunra 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: Aug 3, 2026 08:00 UTC.

Frequently Asked Questions

Was on-us attacked by ransomware?

Yes. on-us was listed as a victim of the Gunra ransomware group on June 30, 2026. The organisation is based in Hong Kong and operates in the Technology sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked on-us?

on-us was attacked by Gunra ransomware. Gunra is one of the most active ransomware groups, having claimed 49 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the on-us ransomware attack occur?

The ransomware attack on on-us was disclosed on June 30, 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 on-us ransomware attack?

The specific data stolen from on-us 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, on-us likely held source code, intellectual property, and customer data.

How can organisations protect against Gunra attacks?

To defend against Gunra 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.