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Leak-site post naming Mosaic Partners, captured by ThreatCluster

Mosaic Partners

payload

Ransomware leak-site victim intelligence

Data size
52 GB
Posted
Jun 26, 2026
Countdown
00d 00h 00m
Country
Switzerland
Industry
IT services, software development, and systems engineering

Summary

Written by ThreatClusterfrom victim profile, leak post, screenshot

The group states it has exfiltrated 52 GB of data from Mosaic Partners, a Swiss IT services firm. The leak post is in countdown publication status, with 00d 00h 00m remaining. Victim profile identifies Mosaic Partners (mosaic-partners.com) as a Swiss company in IT services, software development, and systems engineering; the leak claims data types include internal documents and source code.

Describes what the group claims on its leak site. A listing is not confirmation that a breach occurred.

What was taken

The Swiss company Mosaic Partners specializes in providing IT services, software development, and systems engineering. It creates tailored digital solutions and applications to optimize business processes, covering areas such as CRM, cloud computing, and process management (e.g., in winemaking). The company's products are adapted to individual client needs, ensuring easy integration, data security, and rapid customization to meet market demands.

Also stated on the leak page

Fields this group publishes that do not map to a standard column. Labels are the site's own.

leak
http://payload6eualw6kni6v2lqn7ovjcl76ojx25z5unsyvqo3lbqy3bo5qd.onion/
site
https://www.mosaic-partners.com/

Leak-site images (1)

Images from the victim's leak listing. Thumbnails scraped from the onion page are blurred by default — click a thumbnail to view.

ThreatCluster capture