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However , since GameStop said no retail customers were impacted , it is now believed that GameStop.com was hacked and that the data was stolen through the use of malware .
 ( data breach: was stolen,  GameStop.com: victim, data: compromised data, through the use: attack pattern, malware: tool) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( data breach: was stolen,  GameStop.com: victim, data: compromised data, through the use: attack pattern, malware: tool) 