4 ms·
Partly, but also because it is easier to authenticate as not being spoofed or faked. Faxes have a 'sending number' that is transmitted as part of the protocol,
by grkvlt 8y ago
Partly, but also because it is easier to authenticate as not being spoofed or faked. Faxes have a 'sending number' that is transmitted as part of the protocol, and caller ID allows checking the source, whereas email senders can be very easily changed. However, even the fax may not be secure enough - I worked for a gold bullion trading firm in the 90s where they used faxes for secondary trade confirmation, but sent a telex with the data as then main mechanism, because the telex network was considered more secure than the PSTN and relying on fax sender numbers.
They also used X.25 a lot, as they didn't trust the fancy new TCP/IP stuff that was around, though, so there's that...
- rustcharm 8y agoCaller ID can be very easily changed today. I can set it to anything I want on my phone system. But when FAX machines first became popular, this was less of a problem
- u801e 8y ago> Partly, but also because it is easier to authenticate as not being spoofed or faked. Faxes have a 'sending number' that is transmitted as part of the protocol, and caller ID allows checking the source, whereas email senders can be very easily changed. In the US, there is a widespread problem of robocalls that appear to originate from the same exchange as the phone number assigned to the cell phone. Couldn't this also affect faxes? Unlike email, caller id does not have the equivalent of SPF[1], DKIM[2] or DMARC[3]. [1] https://en.wikipedia.org/wiki/Sender_Policy_Framework https://en.wikipedia.org/wiki/Sender_Policy_Framework [2] https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail [3] https://en.wikipedia.org/wiki/DMARC https://en.wikipedia.org/wiki/DMARC
- grkvlt 8y agoYeah, I should have emphasized the historical aspect more - this was the nineties, when those protocols didn't exist and SSL wasn't as widely deployed. Although, it's probably still a sort of vestigial, holdover opinion from then, even now?