By KYW tech editor Ian Bush

PHILADELPHIA (CBS) – Home Depot hasn’t yet revealed the scope of the breach on its payment data systems,but one company says it has a pretty good idea.

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Sixty million victims could suffer up to three billion dollars in fraudulent charges. That’s the analysis of BillGuard after the five-month attack on Home Depot’s computers.

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The bank and credit card tracking app company says about one in every ten accounts exposed to the criminals will see charges they didn’t make land on their statements — an average of more than $330 in bogus buys for every account.

BillGuard says its users already are seeing fraudulent charges from $5 to tens of thousands from both brick-and-mortar and online stores.

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