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“ Although the investigation did not identify evidence of unauthorized access to payment card data , we determined on April 18 , 2017 that the potential for what to have occurred existed for certain transactions , ” he wrote .
 ( data breach: unauthorized access,  payment card data: compromised data, April 18 , 2017: time) 
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: unauthorized access,  payment card data: compromised data, April 18 , 2017: time) 