Signal has earned a reputation as the most secure messaging app available today. Its commitment to privacy, open-source encryption, and data protection sets it apart from other platforms like WhatsApp, Telegram, and iMessage.
The core reason why Signal is considered secure lies in its strict end-to-end encryption. Messages are encoded so that only the sender and recipient can read them—neither Signal, telecom providers, nor government entities can access user messages.
How Signal’s end-to-end encryption works
Signal uses the Signal Protocol, a cryptographic system that locks each message with a unique key. Only the receiving device can decrypt it. This system is not exclusive to Signal—apps like iMessage and Telegram use encryption too—but Signal goes further.
Unlike other apps, Signal’s source code is open-source, meaning independent researchers constantly audit and improve its defenses. This transparency builds trust and strengthens security.
Signal messenger security features
One of Signal’s standout features is that even group chats are fully encrypted. Signal doesn’t store group names, avatars, member lists, or metadata. It also includes:
- Self-destructing messages and disappearing media
- App lock via fingerprint or phone passcode
- No cloud backups by default, protecting chat history
- Minimal metadata collection—Signal doesn’t store who you message or when
What’s new in the Signal beta version
Signal’s beta includes expanded tools for group communication. Users can now create “New Groups” with enhanced controls and flexibility, along with “Legacy Groups” for compatibility.
Key group chat features:
- Invite via group link or QR code
- In-chat
@mentions - Admin permissions for member management and group settings
- Support for up to 1,000 members per group
Other privacy-focused tools Signal offers
- Available on Android, iPhone, Mac, and PC—all for free
- One-on-one and group messaging with rich media support
- Reactions with emojis and threaded replies, similar to Slack and Discord
- Call privacy settings for iOS to prevent syncing with iCloud
- Option to use a virtual number (e.g. Google Voice) during registration
Users can also lock the app to prevent unauthorized access, even if someone gains physical access to their device.
Why is Signal considered the safest messaging app?
Signal stands out because it minimizes data collection, offers strong encryption, and remains independent—free of ads, trackers, or commercial motives. For users who prioritize privacy over convenience, Signal is the best encrypted messaging app available.
