I am in a similar position, but I very much make sure they have a VERY specific confidentiality marking requirement (including a "must send a follow up communic

I am in a similar position, but I very much make sure they have a VERY specific confidentiality marking requirement (including a "must send a follow up communication within 24 hours after voice communications enumerating specific confidential items disclosed within the voice communication") . If they want super secrets and don't just trust us to show discretion, they can clearly mark what is super secret, just like the Government does with it's secret information.