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ABTA CEO Mark Tanzer says an " external infiltrator " used a vulnerability in the firm 's web server to access data provided by its members and some of those members ' customers .
 ( data breach: access,  used a vulnerability in the firm 's web server: attack pattern, data: compromised data, its members: victim, external infiltrator: attacker, those members ' customers: victim) 
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: access,  used a vulnerability in the firm 's web server: attack pattern, data: compromised data, its members: victim, external infiltrator: attacker, those members ' customers: victim) 