I have some concerns that e-mail I am sending to Person A is being read by
Person B. Both people are in the same organization (I am with an outside
company.)

I am new to working with rules, but it is my assumption that a rule that
forwards Person A's e-mail to Person B could only be set up by Person A when
he is logged in. Is that correct? (I suppose that, theoretically, B could
go into A's office when he is away from his desk, and set up a rule with A's
knowing it, but that's unlikely in this office structure.) If my assumption
is correct, then could the computer administrator (who is actually not an
employee of the company, but comes in on a contract basis to set up/fix
things, deal with website, etc.) create a rule without A's knowledge that
forwards my e-mail to person B? If that were possible, would A be able to
view the rule (and thus become aware of it) when he is logged in to his
account, or would it be visible only to the administrator?

Thanks for any help you can provide.