(RNN) – Sonic Corp said Tuesday that its credit card processor notified the company of unusual credit card activity at its drive-in restaurants.
The chain was informed that the activity could have affected a number of its payment systems, according to Reuters.
The news was first reported by a security blog, KrebsonSecurity, which also claimed the activity could have led to massive amounts of stolen credit and debit card numbers.
Sonic has more than 3,600 locations in 45 states across America, but there is no word yet on how many people may have been affected.
Credit card numbers are allegedly for sale on the dark web for $25 and $50 each, according to KrebsonSecurity.
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