Is there any security risk in using the built-in mail app to connect to my Gmail account from my iPhone or iPad over a public WiFi network (like in a hotel) What about photo editing apps like apps Snapseed and iWatermark, Instagram, which connect to my email, twitter, facebook, flickr accounts to email or post photos? And, in general - apps like the official Flickr account, TweetBot, etc.? How can I be sure that when these apps log into my accounts they are not sending my login credentials unencrypted? In most cases I rely on connecting through 3G and I'm safe there. But, especially with photos or in weak signal areas, I sometimes need to use whatever public WiFi network I can find.