There's a scene in one of my favourite movies Margin Call
"I'm well aware of the fucking time Sam, I'm telling you, you need to see this"
"See What? Email it to me"
"I don't think... that that would be a good idea...."
"I'm on my way"
https://youtu.be/W7Jqwpnw9Lo?t=23
>Senior RBS Yen Trader: its just amazing how libor fixing can make you that much money
https://www.bbc.co.uk/news/business-21358362
And these messages weren't using some burner phones found in a raid, these were messages through their bloomberg terminals.