When it comes to business communication, you need more than WhatsApp, Zoom and Slack as in business communication, you need more than just simple mobile calls or video calls as you will be having quality client calls, video conferences and messaging chats with data or file sharing with a single employee, group or team or the whole office. But these common apps are known for their high profile data breaches, poor customer security. So using these can put your data risk.
So I would suggest you use the encrypted messenger in place of these common chat apps as those messengers use good and strong security and authentication accessible encryption protocols to secure your online data and other information.
The science of computer encryption is known as Cryptography. Before this modern age, majority cryptography is carried out by Governments, majorly for military purposes to send secret messages to their teams for stopping intrusion.
You can read about a few encrypted protocols used by these messaging apps here:
TLS/SSL
It is known as Transport Layer Security. Like other protocols many flaws found in SSL that’s why TLS is developed to overcome its errors. TLS is one of the security protocols that you will encounter most frequently. Whenever you see “https” or the green lock next to a URL in your web browser’s address bar, you know that TLS is being used to secure your connection to the website.
It will protect the data in the range of situations. On top of encrypting your data, this record protocol is charged with dividing the data into further blocks, adding padding, compressing the data and applying a message authentication code (MAC). It also does all of these processes in reverse for data that is received.
IPsec
IPsec also know as the Internet Protocol Security, and it is mostly used in the Virtual Private Networks, but can also be used in routing and application-level security techniques also. It uses a no. of cryptographic algorithms for encrypting data and protecting its integrity, including 3DES, AES, SHA and CBC protocols.
IPsec can be implemented in two different modes which are tunnel mode and transport mode. In the tunnel mode, both the header and the payload are encrypted and authenticated, then sent in a new packet with another header. It’s used by VPNs in host-to-host, host-to-network and network-to-network communications.
So these were a few protocols commonly used as encrypted protocols.