The Target breach has already cost credit unions nearly $30million, according to a survey by CUNA.

The trade group said Tuesday afternoon that the 936 respondentsto its online survey posted shortly after news of the massivebreach was made public are showing an average of about $5.10 percard affected, and that those credit unions represent about a thirdof all credit and debit cards held by credit union members.

The cost figure is an average across all affected cards, notjust those that have been reissued, and the figure doesn't includefraud costs, which are likely to rise in coming weeks, CUNAsaid.

Read more about the Target breach:

• PCI Standard Losing Ground
• Target Confirms POS Malware
• Target Breach: Credit Union Lesson Learned

The retail giant has said the encrypted PIN data was compromisedon 40 million debit and credit cards, and additionally the names,mail and email addresses, and phone numbers of up to 70 millioncustomers were also stolen.

CUNA said almost 18 million debit cards and just under 1.5million credit cards are represented by the credit unionsresponding. The data will help inform CUNA conversations withlawmakers, regulators, the media and others,” CUNA said, addingthat the survey continues with no deadline set.

“Contrary to what some may think, these expenses will not bereimbursed to credit unions and their members by Target or otherretailers,” President/CEO Bill Cheney said in the trade group'sannouncement. “Rather, credit unions must solely cover these costsof card program administration, including in these circumstances ofreacting to a merchant data breach. And, because of credit unions'cooperative structure, the costs of such breaches are ultimatelyborne entirely by credit union members,” he said.