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Posts Tagged ‘dns servers’

Shortly after 10:00am Jun 25th 2013, many government websites from South Korea were not accessible. It was actually caused by the malware performing ddos attack on 2 major DNS servers (ns.gcc.go.kr and ns2.gcc.go.kr).Original Attack VectorDuring the investigation, we managed to find the original attack sample which was served by a compromised website at that time […]

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IntroductionThis is the description of an attack happening in Brazil since 2011 using 1 firmware vulnerability, 2 malicious scripts and 40 malicious DNS servers, which affected 6 hardware manufacturers, resulting in millions of Brazilian internet users falling victim to a sustained and silent mass attack on DSL modems.We will show how cybercriminals exploited an under-the-radar […]

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Here we are. It’s the last call on DNSChanger cleanup. On Monday, the Fbi-run replacement DNS servers are coming down because the court-ordered extension is coming to an end, and your systems may using these servers for resolution. There are a set of sites that may unreliably help you identify whether your machine or router […]

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