I had to fire the MSP I hired because they needed to install some software on everyone's computer, so they sent a company-wide email, with no clearance from anyone, directing approximately 40 people to open terminal and paste in a string sent in that email. Along with instructions on how to open terminal.

The absolute last thing anyone competent does is train employees to receive communications like that in email and follow them. If they'd asked for 3 minutes at an all hands to prep employees, or announced in slack, or something similar then ok. Or some out-of-band announcement that this was legit.