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A cyber attacker gained access to internal systems containing details for phone numbers , names and home and email addresses of the retail giant 's 30,000 staff members .
 ( data breach: gained access,  cyber attacker: attacker, internal systems: victim, details: compromised data, phone numbers: compromised data, names: compromised data, home and email addresses: compromised data, retail giant: victim, staff members: 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: gained access,  cyber attacker: attacker, internal systems: victim, details: compromised data, phone numbers: compromised data, names: compromised data, home and email addresses: compromised data, retail giant: victim, staff members: victim) 