Last year we received an email with title > ACTION REQUIRED - New certificate authority for slack-edge.com Capitalised letters telling you MUST do sth (check;

Last year we received an email with title > ACTION REQUIRED - New certificate authority for slack-edge.com Capitalised letters telling you MUST do sth (check; plus "as soon as possible" in the body). Bad/incosistent email layout (check). Unknown urls (slack-edge.com, slackhq.com) that resemble the services's standard url slack.com (check). A bunch of links obfuscated behind "slackhq" redirects, check. Even a link that reads "slack.com" and points to that slackhq redirect thing. The majority thought it was scam, of course. I only suspected it may not have been scam because a scammer would have done a better job explaining what one had to actually do (and in the end there was nothing we needed to do anyway).