As you know that if you use the public network for access to the world wide web, then your data is not protected, as they are not encrypted and as would be theoretically available to third parties. But in practice things are a little different. A regular user, in our case, Wi-Fi access point will not be able to receive the information transmitted from your device to the network and receive information from the network without knowing the principle of the device data in the network. But, versed in all the intricacies of the "topology" of the network layout can intercept your results, particularly Your username and password. Therefore, there are various software solutions which can to protect your data, but normal users as it inaccessible top. So you don't have to worry about your account, when you use the "free" Internet.