security number held

Matthew Pemble ukcrypto at chiark.greenend.org.uk
Thu, 3 Apr 2008 14:26:33 +0100


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A tricky one - under PCI-DSS Req 3.2, they should not store the card
validation code (3.2.2) subsequent to authorisation.  They might claim that
they had not yet got auth, you could also, from a process p.o.v, claim that
they had received authorisation and it was "Declined.  Incorrect card
details."

There is a necessity to temporarily store the CVV2 (or similar) when
authorisation blocks are being queued for transmission to the merchant
acquirer (or, having been transmitted, are awaiting confirmation of receipt
- which will generally be the auth / dec message).  I, like you, am
surprised that the CVV was accessible to the customer service team.

I would note that the audit instructions require you to sample "incoming
transaction data" as well as other areas for inappropriately stored
"sensitive authentication data."

Matthew

On 03/04/2008, Ricky Rankin <r.rankin@qub.ac.uk> wrote:
>
> Just ordered something over internet from Curry's.
>
> Was contacted that they had a problem confirming the order - they had
> wrong expiry date.
>
> However during the conversation they were able to give me the first and
> last four digits of the card number - for security they didn't hold the
> middle 8.
>
> They were able to give me the 3 digit security number - I thought that
> they were not allowed to store this
>
> Ricky
> ______________________
> Principal Analyst
> Information Services
> Queen's University Belfast
>
> tel: 02890 974824
> fax: 02890 976586
> email: r.rankin@qub.ac.uk
>
>
>
>
>
>
>

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A tricky one - under PCI-DSS Req 3.2, they should not store the card validation code (3.2.2) subsequent to authorisation.&nbsp; They might claim that they had not yet got auth, you could also, from a process p.o.v, claim that they had received authorisation and it was &quot;Declined.&nbsp; Incorrect card details.&quot;<br>
<br>There is a necessity to temporarily store the CVV2 (or similar) when authorisation blocks are being queued for transmission to the merchant acquirer (or, having been transmitted, are awaiting confirmation of receipt - which will generally be the auth / dec message).&nbsp; I, like you, am surprised that the CVV was accessible to the customer service team.<br>
<br>I would note that the audit instructions require you to sample &quot;incoming transaction data&quot; as well as other areas for inappropriately stored &quot;sensitive authentication data.&quot;<br><br>Matthew<br><br><div>
<span class="gmail_quote">On 03/04/2008, <b class="gmail_sendername">Ricky Rankin</b> &lt;<a href="mailto:r.rankin@qub.ac.uk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">r.rankin@qub.ac.uk</a>&gt; wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">

Just ordered something over internet from Curry&#39;s.<br> <br> Was contacted that they had a problem confirming the order - they had wrong expiry date.<br> <br> However during the conversation they were able to give me the first and last four digits of the card number - for security they didn&#39;t hold the middle 8.<br>

 <br> They were able to give me the 3 digit security number - I thought that they were not allowed to store this<br> <br> Ricky<br> ______________________<br> Principal Analyst<br> Information Services<br> Queen&#39;s University Belfast<br>

 <br> tel: 02890 974824<br> fax: 02890 976586<br> email: <a href="mailto:r.rankin@qub.ac.uk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">r.rankin@qub.ac.uk</a><br> <br> <br> <br> <br> <br> <br>
 </blockquote></div><br>

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