One thing to note about Whatsapp is the end-to-end encryption feature that works for everyone. That is, all the messages, video calls, voice calls and photos that we make through this are end-to-end encrypted. This means that the person who can read any message you send because of this feature is only you and the recipient of that message.
Due to this end-to-end encryption, even WhatsApp cannot decrypt messages, calls, photos and videos. This will ensure your safety and privacy. However, WhatsApp Backups (Cloud or Local) are never encrypted. The Disappearing Messages feature is another feature provided to protect the privacy of WhatsApp.
In addition, the WhatsApp Messaging App provides an App Lock feature for Android and iOS versions. The WhatsApp app also has a Biometric Lock feature. Two Factor Authentication is also available if required.
Like WhatsApp, the Telegram Messaging Service has an end-to-end encryption feature, but this does not always work. If we want to exchange messages with this end-to-end encryption feature, we have to use the Secret Chat feature available in Telegram.
Telegram’s Secret Chat has End-to-end encryption, but none of the normal Chats end-to-end Encryption. Also, End-to-end encryption does not work for Telegram Group. There is a normal App Lock for the Telegram App as well as WhatsApp.
Signal is a messaging service that uses the WhatsApp messaging service as well as the end-to-end encryption feature for all messaging. It also uses an open-source signal protocol for end-to-end encryption.
Signal is one step ahead of WhatsApp in terms of message encryption. That is, the Signal Messaging Service encrypts its metadata. Also, the Signal Messaging Service has introduced a new way to communicate between Sender and Recipient to protect privacy. It is called the Sealed Sender. This means that even the signal will not be able to know who is sending the message and who is receiving the message.
For this too a Passcode or Biometrics App Lock feature has been provided. You can also use the Two Factor Authentication feature as well as the Block Screenshots feature if required. Signal has recently introduced an image blur feature.
By comparing the security features of WhatsApp, Telegram and Signal Messaging Services, we can get an idea of what is the best messaging app to use to protect our privacy.