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The group claims that it started out with a database of more than 500 million credentials that it has put together over the past few years by extracting the icloud.com , me.com and mac.com accounts from stolen databases its members have sold on the black market .
 ( data breach: extracting,  the icloud.com ,: victim, me.com: victim, The group: attacker, it: attacker, it: attacker, 500 million: number of data, credentials: compromised data, over the past few years: time, mac.com: victim, accounts: compromised data) 
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: extracting,  the icloud.com ,: victim, me.com: victim, The group: attacker, it: attacker, it: attacker, 500 million: number of data, credentials: compromised data, over the past few years: time, mac.com: victim, accounts: compromised data) 