Attackers Using FRP (Fast Reverse Proxy) to Attack Korean Companies

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Recently, there have been frequent incidents where attackers infiltrated and took control of the internal network of Korean companies, starting with vulnerable servers externally exposed.

This is a case of infiltration into an IIS web server or an MS Exchange server and is the same as previously known types. However, this post will discuss cases that are presumed to be done by a certain hacker group, not by individual attackers. The most significant characteristic of this group is that they use…

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