Apple CEO Tim Cook writes about privacy policies in open letter

CUPERTINO, Calif. (KGO) -- Just one day before what could be the biggest iPhone launch ever, Apple CEO Tim Cook is talking about something else this morning -- privacy. And he's taking a swipe at some fellow Silicon Valley rivals at the same time.

In a new open letter, Cook is discussing Apple's privacy policy. The CEO says Apple takes a very different view than other companies.

"We don't 'monetize' the information you store on your iPhone or in iCloud. And we don't read your email or your messages to get information to market to you."

That's seen as a jab at both Facebook and Google. Both have been criticized in the past over their privacy policies.