[AFMUG] Efax and Security

[Nate Burke via Af]

So I'm asking the question before one of my customers asks it of me.  
Faxing has always been a "secure" transport medium, someone could 
intercept your fax only if they had a wiretap running on your phone 
line.  With Efax services where everything is done via Email (I use the 
Voip Innovations Efax Service), are there more security concerns/risks 
since everything is just emailed in the clear?  We've always told 
people, don't put your SS# or CC# in an email, but if they go to fax a 
credit app or a payment authorization slip through the email to fax 
service, isn't that the same thing?  I know someone is going to bring 
this up one day, and I want to make sure I have an answer ready to go 
for them.

Nate