Atcomm
About the organisation
@comm 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.
ShellCodeX evidence assessment
Strong record · 80/100. Strong record completeness based on identity, context and retained source evidence. This score does not verify the attacker's allegation.
- A plausible organisation domain is attached to the claim.
- The record includes organisation-specific context rather than only a victim name.
- Country attribution is available for geographic context.
- Sector classification supports peer-risk comparison.
- A source listing reference is retained for traceability.
What the listing means
Atcomm appeared on the global leak site on 28 August 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated — the attack itself is dated 26 August 2026, 2 days before the listing. This group has published 1 claim in the last 30 days and remains active.
Recommended actions
- Treat any unsolicited message referencing Atcomm as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account on www.atcomm.cn, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Other Technology organisations should review this group's known TTPs and validate detection coverage against them.
- Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
- A leak-site listing is a claim made by the attacker, not a confirmed breach — check the organisation's own disclosures before acting on it.
Leak-site evidence
Listing URL https://www.ransomware.live/id/QXRjb21tQGdsb2JhbA==