Signal is famous for good end-to-end encryption, WhatsApp is following suit. At DEFCON, two Austrians show what the messengers reveal nonetheless.

Several keys secure messages in the Signal protocol, as used by Whatsapp. Attackers can disable one of them, which is also ...

Signal and WhatsApp may look similar on the surface, but their philosophies couldn’t be more different. One is backed by a data-collecting corporation; the other is run by a nonprofit that ...

In April 2025, messaging platform WhatsApp introduced a new feature called “advanced chat privacy”. Africa Check breaks down ...

Know someone who won't use WhatsApp? Don’t want to join it yourself? The company has a new idea for guest chats that allows ...

Signal isn’t the only end-to-end encrypted messaging app available, but its protocol serves as the backbone of other popular EE2E messaging alternatives like WhatsApp.

Some immigrant advocacy groups are moving from WhatsApp to Signal, a more secure messaging app. They say it helps protect conversations and updates. But not everyone is ready.

(WhatsApp reportedly has more than 2 billion users globally, and Signal has an estimated 40 to 70 million monthly.) Signal is an independent, nonprofit entity, and the app is open source.