1233
In a notification to California about a month later , the retailer said it was believed attackers cycled through login credentials that were likely obtained through other data breaches .
 ( data breach: obtained,  cycled through login credentials: attack pattern, attackers: attacker) 
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: obtained,  cycled through login credentials: attack pattern, attackers: attacker) 