REAL WORLD
“Can you send me the password?”
It sounds harmless. You know the person. They genuinely need access. Sending it in chat takes five seconds.
But now the password exists in another place. Maybe the message remains searchable for years. Maybe it gets copied again. Maybe somebody screenshots it. The issue is not whether you trust your coworker. The issue is that the credential has escaped the system meant to control it.
CHAT MESSAGE
COWORKER
A convenient copy can become a permanent copy.