3184
In this context , it is possible that Greenbug — acting as the espionage arm for Shamoon — collects the necessary information needed to conduct the disk - wiping attack .
 ( data breach: collects,  the necessary information: compromised data, conduct the disk - wiping attack: purpose, Greenbug: 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: collects,  the necessary information: compromised data, conduct the disk - wiping attack: purpose, Greenbug: attacker) 