I remember reading Silicon Valley company being frustrated with whatever emails they had sent on company policy being forwarded to journalists (Kara Swisher??)

I remember reading Silicon Valley company being frustrated with whatever emails they had sent on company policy being forwarded to journalists (Kara Swisher??) . One hack they came up with was to slightly reword every email slightly to identify who did it. Maybe - this solution would help in figuring out who the leakers are!