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The report said paper-based fraud amounted to less than $800 million in losses.

Although it did not break out the costs of online crime from other kinds of digital fraud, the survey did report that “the proportion of online banking customers affected by fraud remained low,” less than one-tenth of 1 percent.

“It’s important for consumers to be aware that these threats exist but also that there are ways they can protect themselves” said Douglas Johnson, vice president for risk management at the bankers association.

When the association began surveying account fraud in 1997, banks were stopping $2 of fraud for every dollar that was successfully stolen.

“In 2011, that figure was $10 for every dollar that went out the door,” Mr. Johnson said.