Cyber-thieves who hacked into the ATM information of at least 800 retail customers in California and Oregon have stolen as much as $700,000 from personal accounts during the last two months, according to police reports. People who used ATM cards to purchase items at Dollar Tree in Modesto and Carmichael, CA, and Ashland, OR, have turned in reports of unauthorized withdrawals in the computer-based scam. Federal and local investigators would not discuss with eWEEK how the thieves stole the information.