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Posts Tagged ‘microsoft exchange server’

Cybersecurity researchers have discovered a new malicious campaign that attempts to exploit the already-fixed ProxyShell vulnerability in Microsoft Exchange email servers together with the Windows PetitPotam vulnerability, once again highlighting the importance of patching vulnerabilities in critical components. The new campaign that hopes to find unpatched vulnerable hosts in order to deploy a variant of […]

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On March 2, 2021 Microsoft detected multiple zero-day exploits being used to attack on-premises versions of Microsoft Exchange Server. Over the next few days, over 30,000 organizations in the US were attacked as hackers used several Exchange vulnerabilities to gain access to email accounts and install web shell malware, giving the cybercriminals ongoing administrative access […]

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On March 2, Microsoft revealed a critical cybersecurity offensive launched by a foreign adversary against organizations in the United States. The company attributed the attacks to a Chinese advanced persistent threat group it calls Hafnium. Microsoft quickly announced patches for the four previously unknown vulnerabilities in Exchange Server that the malicious actors had exploited. Reports […]

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