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Ransomware Victim Construction

McCarthy Inc

Ransomware attack by Kairos · Disclosed May 15, 2026 · 🇺🇸 United States

mccarthyinc.com

Date Disclosed
May 15, 2026
2026
Threat Group
Kairos
97 total victims
Country
🇺🇸 United States
Industry
Construction

ThreatAI Analysis

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

About the Kairos group

Kairos is a data extortion group active since late 2024 that focuses solely on data theft with no encryption, primarily targeting small-to-mid-sized organizations in healthcare, manufacturing, and business services in the US, purchasing initial access from brokers and demanding Bitcoin payments. Kairos has listed 95 victims since June 2024.

Incident Analysis

McCarthy Inc was targeted by Kairos ransomware, one of the most active ransomware groups in our database with 97 confirmed victims globally. The attack was disclosed on May 15, 2026, when McCarthy Inc appeared on the group's dark web leak site.

McCarthy Inc is based in United States , operating in the Construction sector. United States ranks #1 globally for ransomware attacks, with 9,519 victims in our database.

Sector context: Construction firms often hold sensitive project data, client financials, and intellectual property. The industry's typically lean IT security teams can make them more vulnerable.

Kairos 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 18, 2026 00:00 UTC.

Frequently Asked Questions

Was McCarthy Inc attacked by ransomware?

Yes. McCarthy Inc was listed as a victim of the Kairos ransomware group on May 15, 2026. The organisation is based in United States and operates in the Construction sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked McCarthy Inc?

McCarthy Inc was attacked by Kairos ransomware. Kairos is one of the most active ransomware groups, having claimed 97 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the McCarthy Inc ransomware attack occur?

The ransomware attack on McCarthy Inc was disclosed on May 15, 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 McCarthy Inc ransomware attack?

The specific data stolen from McCarthy Inc 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 Construction organisation, McCarthy Inc likely held sensitive business data, client information, and operational records.

How can organisations protect against Kairos attacks?

To defend against Kairos 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.