How secure is the SFTP protocol?

Many of our users know the FTP protocol very well, and they are aware that FTPS is the same protocol protected by a SSL/TLS connection. But when it comes to SFTP, we’re challenged pretty frequently with the question “how secure is SFTP?“.

The easy one-line answer would be: SFTP is very secure. But that is obviously not a real answer, therefore if you want to know more (and why/how it is secure), please, read on.

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