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Microsoft Exchange server actively scanned by Threat actors for Proxy Shell REC flaws

1 August 2021

Hackers have started scanning for the ProxyShell REC flaws after researchers posted details of flaws in the black hat conference. There are a total of three vulnerabilities and it’s been exploited remotely through Microsoft Exchange’s Client Access Service (CAS) running on port 443 in IIS. These vulnerabilities were discovered by Tsai orange from Devcore

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