
This chat application has enabled this technology by default for plain text communication between two users in 2014, but group chat messages and rich media messages are not fully encrypted. Two years ago, WhatsApp started to develop comprehensive end-to-end encryption technology and used software provided by the non-profit security organization Open Whisper Systems. Among these tools, the ultimate feature of WhatsApp is simple and easy to use, and it also provides encryption of chat messages between users.

Among them, social tools that used to share pictures and videos as the core have also been implanted with mobile chat functions to increase user stickiness and use time. With the popularity of smart phones, various mobile social tools have appeared on the market.
