There's no vaccine against card data security breaches in the United States, and the prognosis for this persisting ailment shows there is no fast cure, according to a recent report, which also said it would cost an estimated $100 billion to fix card security in the U.S.

Merchants are in the most vulnerable position in the card data security realm and malware, counterfeit card fraud and card-not-present fraud currently top the list of threats. Of even more concern, card security may never be fixed, as criminals will always seek new ways to commit fraud.

That's according to a new report released by research and advisory firm Aite Group. The report, "Card Data Security: In Search of a Technology Solution," which is based on survey responses from 29 individuals (most of whom head up risk management for North American issuing banks or payment processors), focused on what the respondents thought were today's biggest card security problems, the responsibilities of stakeholders and possible card security solutions.