DIGITALSECURITYGUIDE Panic Button License: FOSS (GPL v3) / Requirements: Android 2.3.3 and up. Details: Allows you to secretly trigger your phone to send an SMS letting a predefined list of contacts know you may be in danger. Psiphon3 License: FOSS (GPL v3) / Requirements: Dependant on device. Details: Helps you to try and circumvent censorship and monitoring by tunneling your internet connection over a number of different encrypted tunnel types such as VPNs and Proxies. Spideroak License: Proprietary / Requirements: Dependant on device. Details: A file synchronisation tool that will allow you to easily share files between your computers and Android devices via an intermediary 3rd party server on the internet. All files are encrypted by the app before being uploaded to the Spideroak servers. AFwall+ License: FOSS (GPL v3) / Requirements: Android 2.2 and up. Details: A firewall for your android device that allows you to control what apps can access the internet. CryptFS License: FOSS (Apache v2) / Requirements: Android 3.0 and up. Details: Allows you to change your Android disk encryption password meaning you can have a one passphrase to decrypt the phone when you turn it on and a different one to unlock the phone during normal use. Cryptonite License: FOSS (GPL v2) / Requirements: Android 2.2 and up. Details: allows you to create encrypted, passphrase protected, containers on your Android device that you can store sensitive files in. SnoopSnitch License: FOSS (GPL v3) / Requirements: Android 4.1 - 4.4 and only specific handsets. Details: An Android app that collects and analyses mobile radio data to make you aware of your mobile network security and to warn you about threats like fake base stations (IMSI catchers), user tracking and over-the-air updates. 28