Signal, an encrypted messaging platform, has garnered attention recently, particularly for its use in discussing sensitive foreign policy matters. Here’s a concise overview of what you need to understand about Signal.
Signal is an open-source application designed primarily for private messaging, group chats, and voice and video calls. It employs end-to-end encryption, ensuring that users’ communications are secure and inaccessible to third parties, similar to services like WhatsApp. Additionally, Signal supports group calls with up to 40 participants and allows group chats of up to 1,000 members while offering features like story sharing and disappearing messages.
Founded in 2012 and backed by the nonprofit Signal Foundation, the app is funded through donations rather than advertisements, prioritising user privacy over profit motives. It is freely downloadable on most mobile and desktop devices in Australia, requiring signup via a mobile number, verification code, and pin.
While the platform’s end-to-end encryption is robust, it is not infallible. There are risks associated with the potential theft of encryption keys, exposure of metadata (which includes details about participants and timings), and compromised devices. Nonetheless, for everyday users, Signal generally provides a secure means of communication. The application asserts that it does not sell or monetise user data.
In terms of user information, Signal maintains a high level of privacy, stating it cannot decrypt the content of messages. The platform only stores encryption tokens necessary for sending messages and establishing calls. Users can optionally provide their contacts to facilitate easier communication with others on the platform. Moreover, users retain control over their personal information through the app’s settings, and any data shared with Signal Support for troubleshooting is handled with care.
Overall, Signal represents a secure option for those prioritising privacy in their communications.