Telegram vs Signal vs WhatsApp | Сравнение и отличия мессенджеров по безопасности, функционалу, скорости и удобству использования.

Comprehensive Comparison of Secure Messengers:
Signal, Telegram, WhatsApp, and Session

Secure messengers have gained particular importance in recent years as privacy issues become increasingly relevant, and more people seek to protect their personal and sensitive information. Among the most popular secure messengers are Signal, Telegram, WhatsApp, and Session.

Each of these applications uses a combination of encryption technologies, privacy-enhancing features, and user-friendly interfaces to provide users with secure and private communication.

Each of these applications has its strengths and weaknesses. The best choice for a particular user will depend on their individual privacy and security needs, as well as personal preferences regarding the interface and additional features. Regardless of which application the user chooses, they can be confident that they are using a reliable and private communication tool that helps protect their information and correspondence from prying eyes.

Overview
Signal, Telegram, WhatsApp, and Session are all secure messengers that aim to provide users with privacy and security in online communication. Each of these applications has its unique features and approaches to privacy and security issues.

Signal was developed by Open Whisper Systems as an open-source application. It is widely recognized as one of the most secure messengers. Signal uses end-to-end encryption to protect messages and calls, meaning that only the sender and recipient have access to the message content. Signal also implements advanced security features such as password-protected screen lock and contact identity verification. The application is known for its strong cryptography and privacy features, including end-to-end encryption of all messages, voice and video calls, as well as group chats.

Telegram is a cloud-based messaging application that offers end-to-end encryption only for "secret chats," but not for regular chats. It also provides features such as group chats, bots, and a large library of stickers and GIFs. Telegram uses encryption to protect messages, but encryption keys are stored on Telegram's servers, which some security experts believe may make the application vulnerable to hacking. Telegram has a "Secret Chats" feature that uses end-to-end encryption to protect messages.

WhatsApp is a popular messaging application owned by Facebook. The application uses end-to-end encryption for all messages, voice and video calls, as well as group chats. It has a large user base and is known for its user-friendly interface and integration with other Facebook products.
Despite its security features, some users have concerns about WhatsApp's connection to Facebook and the potential collection and sharing of user data.

Session is still relatively unknown to the wider audience. Session is a decentralized and open-source messaging application. It uses some of the most advanced technologies to enhance privacy, such as the Signal protocol, onion routing, and decentralized storage and retrieval of messages. Session's goal is to minimize metadata leakage and provide strong message encryption with a convenient interface featuring multi-device support, attachments, and group chats. Additionally, Session uses a proof-of-work mechanism to prevent spam attacks and offers additional security features such as threat codes, remote data wiping, and pseudonyms.

Independence
WhatsApp is owned by the large company Facebook, which theoretically gives Facebook access to data collected by WhatsApp, including messages and user information. This raises concerns about confi