“Hi Keith,” an email from Google co-founder Sergey Brin begins. “General Keith…so great to see you!” reads an email from Google chairman Eric Schmidt to “General Keith,” the now former NSA director Keith Alexander. These exchanges, published Tuesday by Al-Jazeera, paint a picture of casual coziness with the NSA that is at odds with Google’s public image as a company exasperated by all the government’s recent attempts to pilfer user data and undermine Internet security.