Something many security problems recently. Are you measure properly? Do you change the password for each service properly? properly , Are you using two-step authentication?
Two-step authentication has been introduced (Google, Apple, Dropbox, Box, Evernote, etc ...) in various services already. The following sites might be of interest for more information about two-step authentication. · Http://www.google.co.jp/intl/ja/landing/2step/