Is Fax communications are safe from interception by radiotelephone sensors?

Fax communications can be vulnerable to interception, including by radiotelephone sensors, especially if they are transmitted over unsecured lines. While traditional fax machines use telephone lines that are relatively secure, digital faxing over the internet can expose data to interception if proper encryption and security measures are not in place. Therefore, without adequate safeguards, fax communications are not entirely safe from interception.