Does using the Black Speech attract the Eye of Sauron

I was reading the page about Black Speech at http://ift.tt/1vvzVcF and it says

"The Black Speech is unfortunately one of the more incomplete languages in Tolkien's novels, because the forces of good refuse to utter it, as it attracts the attention of the Eye of Sauron."

What cannon text supports the proposition that uttering Black Speech attracts the Eye of Sauron?