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Re:Slack closes account of an Iranian user living in Canada by mirimir on Thursday December 20, 2018 @10:19AM (#18725584)
> ... who as ever in the past opened up the Slack app in a designated country ...

But they don't know that. They have IP addresses. And they do geolocation. But IP-based geolocation isn't reliable enough for that.

Re:Slack closes account of an Iranian user living in Canada by dragonwriter on Thursday December 20, 2018 @01:20PM (#18727489)
> But they don't know that.

They have information from which they conclude that; this information is fallible and conclusions are not certain, but that's true of virtually all “knowledge” about the material world.

Re:Slack closes account of an Iranian user living in Canada by kitd on Thursday December 20, 2018 @10:28AM (#18725669)
Well agreed, which makes it worse.