Nothing being transmitted electronicly or over air waves is safe! Plain and simple. If you don't want some one else to know about it don't send it! Now can they possibly monitor every single transmission, email or text msg, maybe with the aid of super computers. I used to work for MA bell in the states, guys I must tell you the tapping and bugging technology they had back in the late 80's was incredible! So we are now twenty years into the future and I knew then where it would lead. Nothing electronic is safe!! Period. So you take your chances and talk in nursery rhymes or something. But it is all a chance!