CGI Tutorial

Lawrence D'Oliveiro ldo at geek-central.gen.new_zealand
Mon Oct 9 10:22:15 CEST 2006

In message <mailman.98.1160379324.11739.python-list at>, Steve
Holden wrote:

> Lawrence D'Oliveiro wrote:
>> In message <mailman.1374.1160073684.10491.python-list at>, Steve
>> Holden wrote:
>>>Credit card numbers should be encrypted in the database, of course, but
>>>they rarely are (even by companies whose reputations imply they ought to
>>>know better).
>> How would encryption help? They'd still have to be decrypted to be used.
> Indeed they would, but with proper key management the probability that
> they can be stolen from a database in their plaintext form is rather
> lower. Just last week a police employee in my class told us of an
> exploit where a major credit card copmany's web site had been hacked
> using a SQL injection vulnerability. This is usually done with the
> intent of gaining access to credit card data.

If they can do that, it doesn't seem much of a step to compromise the code
that decrypts the credit card data, as well. Keeping it encrypted, when the
key needs to be kept at the same (in)security level, is just

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