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Cyber Threat
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Ransomware victim Business Services

oconnellmahon.ie

Listed by Dan0n on · organisation based in Ireland

oconnellmahon.ie

Disclosed
May 28, 2024
Leak-site listing date
Threat group
Dan0n
33 victims listed
Country
Ireland
#42 most targeted
Sector
Business Services

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Dan0n. Figures and technique mappings are quoted from the source data, not inferred.

About the Dan0n group

dAn0n emerged in early 2024 operating a RaaS model, rapidly claiming 13 victims in May 2024 alone, predominantly targeting US-based organizations in business services and filling the vacuum left by disruptions to LockBit and BlackCat/ALPHV. Dan0n has listed 33 victims since March 2024.

Incident analysis

oconnellmahon.ie was listed by Dan0n ransomware, a group with 33 victims recorded in this database. The listing appeared on the group's leak site on May 28, 2024.

oconnellmahon.ie is based in Ireland and operates in the Business Services sector. Ireland ranks #42 worldwide for ransomware disclosures, with 67 victims in this database.

Sector context. Business services firms often have access to multiple client environments, making them high-value pivot points for ransomware operators seeking to maximise impact across multiple victim organisations.

Dan0n 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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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 oconnellmahon.ie attacked by ransomware?

Yes. oconnellmahon.ie was listed as a victim of the Dan0n ransomware group on May 28, 2024. The organisation is based in Ireland and operates in the Business Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked oconnellmahon.ie?

oconnellmahon.ie was attacked by Dan0n ransomware. Dan0n is one of the most active ransomware groups, having claimed 33 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the oconnellmahon.ie ransomware attack occur?

The ransomware attack on oconnellmahon.ie was disclosed on May 28, 2024. 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 oconnellmahon.ie ransomware attack?

The specific data stolen from oconnellmahon.ie 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 Business Services organisation, oconnellmahon.ie likely held sensitive business data, client information, and operational records.

How can organisations protect against Dan0n attacks?

To defend against Dan0n 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.