Cosmon Data Breach

Beast ransomware has claimed Cosmon, a technology company based in the United States, listing them on its dark web portal on August 25, 2026. The listing was identified through SOCRadar’s Dark Web Monitoring. Cosmon operates in the software or technology platform services sector, providing solutions to business customers. This incident places Cosmon among a small number of identified victims of the Beast group in recent times. Over the preceding 60 days, Beast had claimed two other victims: one in the Technology sector in the United States, and another in Agriculture and Food Production in Canada. This makes a total of three claimed victims within this short period. Given the limited number of claims, a definitive pattern of targeting is not yet established, and Beast appears to be in an early operational phase.

SOCRadar’s Dark Web Monitoring queried the domain cosmon[.]com, which returned two records. While more records than typical for this timeframe, neither provided strong evidence of a direct compromise. One record corresponded to a consumer email signup on Cosmon’s customer-facing application portal, suggesting a potential risk of customer account takeover rather than an internal employee compromise. The second record was unclassified and associated with a numeric handle on the root domain. The analysis did not surface any corporate employee credentials or internal endpoints. This profile of stealer-log data does not support a hypothesis of initial access via infostealers for this listing. However, the absence of such evidence does not rule out other plausible intrusion vectors, such as phishing or supply chain attacks, which would not necessarily be reflected in stealer-log telemetry. Given the findings, it is recommended that Cosmon continue dark web monitoring for any further related activity. Proactive credential hygiene checks, including password rotation and multi-factor authentication review, are advised across all platforms, especially for customer-facing portals and remote-access systems. Monitoring of alternate corporate domains and Microsoft 365 activity should also be considered.

This report is intended for threat intelligence and security awareness purposes. SOCRadar does not host, redistribute or buy stolen data. All breach information reported here is collected from publicly accessible threat actor and ransomware portals. This content is intended to equip CTI teams with context around recent attacks. While we strive for accuracy, listings on ransomware leak and extortion sites cannot always be independently verified and may not reflect confirmed breaches. If you believe any data in this report is incorrect, please contact us.