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Disney hack leads to 1.2TB of Slack communications leaked online
(stackdiary.com)
This is a most excellent place for technology news and articles.
I don't think Slack has a self hosted version, and does not offer IP allow listing. There's nothing preventing someone to go to https://disney.slack.com/. I think when they say "internal" they mean for internal employees, and not like a thing for fans.
I think when Disney demands an internally-hosted version of your product, then the sales team tells engineering that they'll provide one, and mark the price up accordingly. That kind of thing doesn't appear on the external listing for everyone else.
Why would Disney demand that?
Why would they choose slack if they want to host, maintain and be responsible for the internal chat themselves?
They choose slack because they do it for them so that they don't have to do it themselves. That is the selling point for them.
Businesses buy cloud services, because they do not want to manage stuff themselves.
Ostensibly better opsec