Organized crews of cybercriminals that attacked health care organizations and other critical services with ransomware this month kept their access to victims’ networks even after ransoms were paid, new research released by Microsoft Corp. says.
In a blog post published Tuesday, Microsoft’s Threat Protection Intelligence Team said it had identified “dozens” of ransomware attacks in the first two weeks of April targeting organizations critical to the world’s response to the COVID-19 pandemic, including aid organizations, medical billing companies and educational software providers.
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Related from Microsoft Threat Protection Intelligence Team: Ransomware groups continue to target healthcare, critical services; here’s how to reduce risk