In our fifth episode, we are talking again to APNIC's Chief Scientist, Geoff Huston, regarding a recent presentation he sat in on at DNS OARC 36 about Slack's unfortunate 24-hour outage on 30 September 2021, where 1% of its users (almost 100,000 users) weren't able to access Slack, due to an issue with deploying it's DNSSEC. We'll discuss two themes that Geoff has blogged about and discussed on this show this year: managing and securing the DNS is difficult but necessary, and the need for greater transparency in the industry when discussing things that have gone wrong, so that the community can learn from them to make sure they don’t happen again.You can read Geoff's account on this presentation here: Notes from DNS-OARC 36 (https://blog.apnic.net/2021/12/07/notes-from-dns-oarc-36/?utm_source=podcast&utm_medium=organic&utm_campaign=PING&utm_term=E5&utm_content=description)Also, here is a link to Slack's account of the situation that we refer to in the show: The Case of the Recursive Resolvers (https://slack.engineering/what-happened-during-slacks-dnssec-rollout/)The views expressed by the featured speakers are their own and do not necessarily reflect the views of APNIC.