Paul ArmstrongI have to use GitHub for $reasons and Copilot decided to make some sub-agents with my username, which it prefixed references to with @. Naturally, this lead to an astronomical amount of spam.
For those in a similar situation and running Postfix, you may find this useful in your header_checks file
/^From: Copilot <[email protected]>/ REJECT I don't use copilot