Today, security in technology is one of the most important issues, especially with regard to privacy and the protection of personal data. For this reason, it is just as important to take steps to avoid identity theft or espionage in the mobile conversations we have. For that we have Threema, the app to keep our chats on Android safe .
The functions of this platform are very simple, some of them are almost Perogrullo, but it does not mean that they are not very effective. In fact, the simplicity of the app is surprising for the very powerful security measures it has, so it will be worth analyzing in depth.
How to protect chats with Threema
We send many messages a day through the smartphone, and messaging applications such as WhatsApp or Telegram use end-to-end encryption, although that is sometimes not enough . And in that trail of conversations, there is always the risk of blackmail or scams, but luckily, there is a fairly effective solution with Threema. 
The operation is very simple, since it works as an independent messaging app, but with strongly secure functions. Obviously, it uses end-to-end encryption on messages, files and multimedia, but also adds other options. It establishes a range of levels, in which to reach the 3 security points, the user must scan a QR code assigned to him to confirm that he is not a robot and verify the identity.
You don’t need to have a mobile number
Threema contains a very robust package of measures to ensure user privacy. In this way, it uses the NaCi cryptography protocol to encrypt the file library, and it is not necessary to register with a phone number , since the app assigns each user an 8-digit ID or password to enter the app and that a profile be generated, but neither the number nor any personal data appears. Perfect for interactions with unknown people such as Wallapop or dating apps.
Despite the fact that there are no numbers involved, you can make backup copies of those contacts to avoid losing them, apart from a backup of the conversations. The problem? That it only has a paid version , although it is usually an app that enjoys many discounts, such as on Black Friday or periodically, since it is a service that is highly demanded by the Android community.
