<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">Dear DNS experts,</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">In a research which we concluded in June 2023 we performed longitudinal measurements (2020 - 2023) and analysis of abuse of dandling DNS records. We characterize the abuse and the attackers' infrastructure with recommendations for countermeasures.</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">The research will be presented at Usenix NSDI on 18 April 2024:</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><a href="https://www.usenix.org/conference/nsdi24/presentation/friess">https://www.usenix.org/conference/nsdi24/presentation/friess</a><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">A summary of the research can be found here:</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><a href="https://blog.apnic.net/2024/04/04/abuse-of-dangling-dns-records-on-cloud-platforms/">https://blog.apnic.net/2024/04/04/abuse-of-dangling-dns-records-on-cloud-platforms/</a><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">The technical report is here:</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><a href="https://arxiv.org/abs/2403.19368">https://arxiv.org/abs/2403.19368</a><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">We appreciate your feedback on our research.</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">Best, Haya Schulmann</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">--</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">Prof. Dr. Haya Schulmann</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">Goethe-Universität Frankfurt</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small">ATHENE </div></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">
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