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Observations on a DNSSEC incident: the russian TLD

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Observations on a DNSSEC incident: the russian TLD
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50
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CC Attribution 2.0 Belgium:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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On tuesday 30 january, a few days before FOSDEM, people noticed that Web sites under .ru (Russia) were all down. Because of the war, many people speculated this was an attack. But, actually, the problem came from a DNSSEC error in the top-level domain .ru and, as of today, nothing indicates it was an attack. We will describe the problem, the technical observations, possible causes and a few lessons.