I've read credit card numbers over the phone, but I never plan to 
transmit any such thing over the net.  Have you ever bought anything
which you've learned about on the net?  How did you pay for it?

2 responses total.

Yes, I have.  I used CyberCash/CompuServe Wallet, a secure payment
system that uses RSA and DES for protection of things like credit
card numbers.  (Actually, i had to use it, since I did some development
of the back-end software for the merchant processing and it needed 
some testing. :-)

Emerging standards, like CyberCash, Secure Courier, and STT will make
credit-card transactions over the phone at least as safe as a typical
catalog telephone purchase, probably moreso.

I was asked for CC info over the net to register an account with a service
provider in Maine, but refused to do so before I was summarily thrown out.
Unless you know specifically who you are giving the information out ot and
that they have some encyption method in place or a common encryption metheod
like PGP, it is not, at this point, advisible to place this sensitive info
over the net. I don't wish to either understress this point, nor sound
paranoid, considering that every time you buy gas you are placeing yourself
in the same risk. It is good practise to take the carbon and recipts from all
sales with you. Over the net, packet sniffers can fool encrypted sites beuase
the info you type in and transmitt is not generally encrypted until it is
recieved at the destination port. The net is filled with FTP sites hackers
and crackers, some of which are downright malicious. Be wary.

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