Attack against voip infrastructure

Can we get some more technical details for question #1./3 and 4 in below article, please?

Were there INVITE floods against SBCc? Anything in the message body? Were there bogus NOTIFY or UPDATE messages to proxies/SBCs?

If you click on the author avatars, they’re all on Twitter. Since they post their Twitter handles here, then I presume it’s fair game to ask them on Twitter. A single tweet with all three @handles should get a response.

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