Signal is not only one of the most secure messaging apps for work, praised among others by Edward Snowden and Twitter’s Jack Dorsey. It also has a desktop version for Windows, Mac, and Linux, enabling users to chat, make video calls, send voice messages and files from both their computer and mobile phone. That offers a substantial productivity boost without sharing mobile’s SMS messages — a good solution from a security point of view.
Note: To keep up with a high level of Signal’s security features, it goes without saying that the computer should also be secured by password, hard-drive encryption, etc.
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