Send the following on WhatsApp
Continue to ChatWindows Live Messenger : Criptare le conversazioni https://www.italiamac.it/work4net/2008/08/windows-live-messenger-criptare-le-conversazioni/
Windows Live Messenger : Criptare le conversazioni https://www.italiamac.it/work4net/2008/08/windows-live-messenger-criptare-le-conversazioni/