The security vendor Trustwave has been accused of failing to identify security gaps at Target, according to a lawsuit filed by banks for damages suffered from the holiday season data breach.

Plaintiffs Trustmark National Bank and Green Bank N.A. seek class-action status and damages of more than $5 million. Their lawsuit is one of nearly 100 that have been filed by Target customers or banks because of the breach. New York-based Trustmark and Houston-based Green Bank filed their suit March 24 in Chicago's U.S. District Court, naming Trustwave Holdings and Target Corp. as defendants.

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