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Cyber Threat
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Ransomware victim Technology

HighWire Press

Listed by Hellcat on · organisation based in United States

highwirepress.com

Disclosed
Apr 5, 2025
Leak-site listing date
Threat group
Hellcat
20 victims listed
Country
United States
#1 most targeted
Sector
Technology

ThreatAI analysis

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

About the Hellcat group

HellCat is a ransomware-as-a-service group that formed in Q4 2024 and quickly became notable for high-profile attacks against Schneider Electric, Telefónica, and Israel's Knesset, primarily gaining initial access via stolen Jira credentials harvested by infostealer malware, targeting critical infrastructure and government entities. Hellcat has listed 20 victims since October 2024.

Incident analysis

HighWire Press was listed by Hellcat ransomware, a group with 20 victims recorded in this database. The listing appeared on the group's leak site on April 5, 2025.

HighWire Press is based in United States and operates in the Technology sector. United States ranks #1 worldwide for ransomware disclosures, with 10,141 victims in this 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.

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files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished.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

Yes. HighWire Press was listed as a victim of the Hellcat ransomware group on April 5, 2025. The organisation is based in United States and operates in the Technology sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked HighWire Press?

HighWire Press was attacked by Hellcat ransomware. Hellcat is one of the most active ransomware groups, having claimed 20 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the HighWire Press ransomware attack occur?

The ransomware attack on HighWire Press was disclosed on April 5, 2025. 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 HighWire Press ransomware attack?

The specific data stolen from HighWire Press 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, HighWire Press likely held source code, intellectual property, and customer data.

How can organisations protect against Hellcat attacks?

To defend against Hellcat 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.