Mobile phone security risks are abundant with standard, unencrypted text messages among other elements of mobile use. Accordingly, more and more users are looking to encrypted phone call and text message options for privacy protection. A number of apps available for iOS and Android are designed to improve text message security, encrypting both text messages and phone calls. Let’s take a look at some of these apps, but remember no app can protect mobile devices from physical access. Unless a phone features a passcode, anyone handling the device can read messages, view pictures, check out call history, etc.
TextSecure and Signal
Created by former Twitter security researcher Moxie Marlinspike’s Open Whisper Systems, TextSecure allows users to message everyone on their phone list. End-to-end encryption is only available when talking to other TextSecure users; however, notifications are sent if the conversation isn’t secure. Available for free on Android, TextSecure utilizes independently developed algorithms, including those that create a new security key with each message.
Described by its creators as the encrypted, cloud-based, quicker version of WhatsApp, Telegram makes it easy to share messages and media with up to 200 people at once. Choices include ephemeral chats, which are never saved, and cloud-accessible messages for users wanting to return to conversations. The “secret” chats leave “no trace” on the Telegram server.
Offering “military-grade security,” Wickr is for those who want to know their messages and photos aren’t readable past a certain time. Metadata is stripped from photos before they’re sent, and messages automatically disappear following a set amount of time after being read. The app makes customization simple and allows users to decide how many people they want to find them, create group chats, and “shred” remains of deleted files.
Surespot features tools for independently managing different identities on a single device to distinguish personal and professional communications. Voice chat is also integrated, as is flexible photo control for locking, unlocking, and deleting photos from recipients’ phones. The app requires a password that cannot be recovered or reset. Users may look at one another’s public keys offline to ensure no “man-in-the-middle” attacks.
CoverMe securely stores a variety of media data, including passwords, photos and documents, and makes it possible to hide identities and phone numbers. Calling and texting with non-users is possible via the CoverMe phone plan, but only phone calls and texts with other users feature end-to-end encryption.
These and other security apps offer the text message security that businesses often require to communicate with employees and clients. And of course, they’re useful for the everyday user as well.