[dahdum]

Isn’t it though? You can attack email systems, network operators, and end users in a myriad of ways remotely from anywhere in the world. How can you compromise a traditional fax? Eavesdropping the PSTN itself? Physical access to one of the machines? Stealing the printed document?

Network fax systems are more convenient to use than traditional, but still more secure than email because they’ve been designed to be so.

[omniglottal]

Analog. Unencrypted. Your intent to misinform appears evident.

[dahdum]

Where’s the attack surface to exploit this analog and unencrypted data? A government can order their telecoms (and they do), but the same happens with emails providers. Neither is secure from government intrusion, but email is easier to compromise than traditional fax systems because their exposure is so limited.