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Leak-site post naming Atcomm, captured by ThreatCluster

Atcomm

global

Ransomware leak-site victim intelligence

Data size
5.79 GB
Files
292
Views
114
Posted
Aug 28, 2026
Countdown
21 Days 18:45:12
Country
China
Industry
PR, digital marketing, and human‑AI collaboration

Summary

Written by ThreatClusterfrom victim profile, leak post

The group claims to have exfiltrated 5.79 GB of data from Atcomm (www.atcomm.cn), with the leak listed in countdown. The leak page describes @comm as a Shanghai-based PR and digital marketing agency that leverages data and AI to help brands grow. The victim profile lists the domain www.atcomm.cn and identifies the sector as PR, digital marketing and human-AI collaboration.

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

What was taken

Atcomm is a Shanghai‑based agency specializing in PR, digital marketing, and human‑AI collaboration. It leverages data and AI to help brands grow. The company operates from Room 2103, SK Building, in Pudong New Area.

Also stated on the leak page

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

Address
Room 2103, SK Building, No. 149 Yucheng Road, Pudong New Area, Shanghai

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