Phone apps enable you to encrypt your images directly on your phone. Encryption apps for Android-based smartphones include WhisperCore and Droid Crypt, and iPhone apps include Kryptos and SecuMail.

There are several end-to-end encrypted messaging apps for both Android and iOS. The one we’ll focus on here is Signal, which is developed by Signal Messenger LLC and funded by the Signal ...

WhatsApp is one of the world's most popular end-to-end encrypted apps which alone makes it worth looking at. After all, there's no point in a messaging app if you're the only one using it. Many ...

Both of these apps allow users to encrypt images and documents stored on their smartphones using 128-bit AES encryption, which should buy you some time if someone manages to crack your password ...

Organizers and protesters are using encrypted messaging apps to avoid police surveillance. Apps like Signal and WhatsApp use encryption, which only allows the sender and receiver to view a message ...

An image from the Signal app is shown on a mobile phone in San Francisco, March 18, 2025. Credit: AP/Jeff Chiu How common is governmental use of encryption apps?

Researchers demonstrate that a widely used mobile chat app not only sends some kinds of data in the open, it also stores it publicly online. Viber sends video, images without encryption protection ...