Credit unions tell trade association breach cost an average of $5.10 per affected card.
The world's largest payment processor outsources 21 administrative jobs at its Omaha location.
Debit card issuers, Fed and merchants will present cases regarding how the Fed interpreted Dodd-Frank's Durbin Amendment.
Bipartisan legislation would require entities, including financial institutions, retailers and federal agencies, to investigate breaches and inform consumers.
House Financial Services spokesman said committee would examine data security, but would not answer specific questions about Target.
Credit.com poll reveals 84% of respondents say its extremely or somewhat likely they will begin reducing outstanding balances in 2014.
HyTrust's Eric Chiu praised the Payment Card Industry Data Security Standard's history, but said hackers have found ways to defeat it.
Credit unions that informed members and replaced cards early are reporting few to no losses.
Retailer also admits personal information, such as mailing addresses, phone numbers and email addresses, were also compromised.
Proposed legislation introduced by Sen. Mark Warner (D-Va.) would require the CFPB to write new disclosure rules.