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Atomsilo

Inactive
AtomSilo is a double-extortion ransomware group that emerged in September 2021, exploiting the Atlassian Confluence vulnerability (CVE-2021-26084) for initial access and demanding ransoms up to $1 million, attributed to the Chinese state-linked threat actor BRONZE STARLIGHT.
5 Victims
Dec 21, 2021 First Discovered
Feb 24, 2026 Last Discovered
68 Days Inactive
0% Infostealer
0/3 Sites Online
Top Countries
BR 2
JP 1
Top Sectors
Healthcare 2
Financial Services 1
Manufacturing 1
Known Locations (3)
Leak List - Atomsilo
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AtomSilo
mhdehvkomeabau7gsetnsrhkfign4jgnx3wajth5yb5h6kvzbd72wlqd.onion
AtomSilo
l5cjga2ksw6rxumu5l4xxn3cmahhi2irkbwg3amx6ajroyfmfgpfllid.onion
Victims (5)
A large bank in Asia
Financial Services Discovered: Feb 24, 2026 · Attack est.: Feb 24, 2026
[AI generated] A large bank in Asia refers to a financial institution that provides diversified services like deposits, loans, wealth management to individual and corporate clients. Being large-scale, they generally...
Eisai Co., Ltd
JP Healthcare Discovered: Dec 21, 2021 · Attack est.: Jun 5, 2023
[AI generated] Eisai Co., Ltd. is a Japanese multinational pharmaceutical company headquartered in Tokyo. Established in 1941, it's one of the leading firms in the field of neurology and oncology....
Tegra Vendas
BR Discovered: Dec 21, 2021 · Attack est.: Dec 21, 2021
[AI generated] N/A
LIGHT CONVERSION
Manufacturing Discovered: Dec 21, 2021 · Attack est.: Dec 21, 2021
Cristália - Indústria Farmacêutica
BR Healthcare Discovered: Dec 21, 2021 · Attack est.: Dec 21, 2021
[AI generated] Cristália - Indústria Farmacêutica is a premier pharmaceutical company based in Brazil. Founded in 1972, it is renowned for contributing to major advancements in the medical and pharmaceutical...