Eak-spay in-ay ig-pay atin-lay. It’s-ay unbreakable-ay.
What?
Well, on the off-chance you are talking about codes and codebreaking, I have found that if you simply use Google Translate, and translate your text into another language, that the NSA cannot break it.
You want proof? Well, most of my secret text is about my kitties, and the NSA never once have contacted me.