Ransomware Group sinobi Hits: North Star Asset Management
Summary
In the latest cybersecurity news, North Star Asset Management — a company operating in the US — has fallen victim to a ransomware attack conducted by the group sinobi. This data breach, discovered on 2025-12-19 21:46:12.905796, underscores the increasing need for proactive cybersecurity defenses as we continue through 2026.
Incident Report
| Attribute | Information |
|---|---|
| Target Organization | North Star Asset Management |
| Threat Group | sinobi |
| Summary | North Star Asset Management, Inc. is a prominent independent SEC Registered Investment Advisory firm based in Wisconsin, managing nearly $3 billion in assets. They offer tailored investment management and retirement planning services for families, corporations, and endowments, always prioritizing client interests as fiduciaries. Their team consists of 11 investment professionals, including 9 CFA Charterholders and 2 CFP professionals, boasting over 200 years of combined investment experience. North Star is recognized for its personalized and independent financial advice, charging a fee of 0.6% of managed assets. |
| Date of Breach | 2025-12-19 21:42:36.792000 |
| Discovery Date | 2025-12-19 21:46:12.905796 |
| Region | US |
| Business Sector | Financial Services |
Recommended Security Actions
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- Data Breach Monitoring – Get real-time alerts if your organization’s data appears in public or dark web breaches.
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How HookPhish Helps You Stay Ahead
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You can also check if your organization’s data has been exposed using our free Data Breach Checker.
Disclaimer
HookPhish does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.
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