Cryptographic messenger SafeUM is the confidentiality of communication.
Encrypted chat eliminates information leaks. Every written or said word is encrypted.
Audio and video calls in SafeUM are done by P2P technology: it is impossible to intercept data (content) - the information is sent directly between interlocutors bypassing servers.
In the messenger, in Premium Package, end-to-end encryption is used:
All the data (including speech) in Premium package is encrypted before sending from the device and decrypted on the recipient's device only.
Use the application to call out to mobiles and landlines around the world at the most affordable rates. Please note that your phone contacts are not automatically transferred to messenger which preserves your anonymity. Only you decide who to add to your SafeUM contact list.
Call directly with no “man-in-the-middle”.
The P2P (Person to Person) technology sends your voice and video directly to your conversation partner bypassing our servers(which only connect you to another person's gadget).
Hence, your chat history is not saved anywhere in any way.
Such features as file transfer, history disabling and the number of messages displayed on the chat screen are available in encrypted group chats. The moderator is the one, who creates a group and he is the only one, who can modify Settings and set up the security policy of the group chat. Messages and files are delivered to online and offline contacts. If one of the participants of the encrypted group chat changes the encryption keys, other participants will get the notification about it.
Rest assured in total confidentiality of your messaging and conversations. We use modern cryptographic/data encryption algorithms never implemented in any other public product before. You yourself generate secret encryption keys for confidential communication. They are only stored in the device RAM and are deleted during shutdown/reset. The ElGamal Elliptic Curve Cryptosystem eliminates the possibility of your data to be decrypted.
Security keys verification by QR code scanning allows you to check the authenticity of the interlocutor and his keys. This additional security measure excludes MITM-attack. Scan QR code to verify the key. The service is available in offline mode.
Disable chat history saving feature if you fear that your confidential information can be disclosed to third parties or used against you. Chat history saving is disabled simultaneously on both sides. The chat history saving icon in your dialog box will show ON/OFF.
Sign up without a SIM card using only login and password. Security still remains at high level thanks to additional authorization parameters.
Access to application is protected by a reliable and elaborate system of PIN codes which consist of 4 to 10 characters. The first PIN provides full access to the application and all its features. The second PIN hides secret conversations and confidential data. The third PIN deactivates the account without any possible recovery. This feature is designed for emergency situations and allows you to make sure that no third parties get access to your personal information.
Sign up without mobile phone number using only login and password. This will keep your location secret.
With modern codecs, sound in SafeUM is transmitted in the best quality even at the minimum bandwidth of the communication channel. HD quality calls provide a "presence effect", you will hear your interlocutor as if he/she is close to you.
Make video calls between the application users with the help of modern technologies. WebRTC provides fast video streaming whereas VP8 codec allows to achieve perfect image quality. You will definitely appreciate the quality of your communication.
Use up to three accounts on one device with calls and messages coming simultaneously to all three of them. Accounts are not interconnected and can be used on different devices without restrictions and limits. Switch by a single click.
Your conversations, secret keys, call history, messages and transferred files are not saved on your data storage devices. Device loss, theft or seizure will not expose confidential information. The encrypted data is stored on our secure servers.
In case of unauthorized access attempt to your account from unregistered devices you will receive security threats notifications via application indicating the IP address and model of the device used for unauthorized access. This feature provides a high level of your account security.
You will never see any ads in the Premium package of SafeUM.
All information is encrypted using WSS (Secure WebSocket) even in the free version. This means that the information can only be encrypted and decrypted by you and your conversation partner. Neither Internet Service Provider nor public Wi Fi access point owner will be able to access your information.
The professional support team will assist you in case of problem or difficulties when using the messenger.
Communicate with several conversation partners simultaneously. Video and audio calls are available to all application users regardless of their tariff plans. This feature allows you to stay connected anywhere in the world, always in touch with family or business. You can be absolutely sure of your communication security and of all transmitted data's integrity.
* is expected to be in the future release