You should be safe for now! that may change. I would, if I were you & concerned, stick with Market apps only and just be carefull what you install, even from the Market, some apps are....not good! to put it mildly. Download from trusted developers, read the app description carefully, read & question what permissions it requires, if you are not sure about something in the app then don't install it & also check for spelling mistakes in the app description, easy giveway if the app is coming from somewhere else than where it's says it's coming from.