3126
In return , Cipher0007 revealed his methods and several hours later AlphaBay developers were able to close the loopholes .
 ( patch vulnerability: close the loopholes,  AlphaBay developers: releaser, several hours later: time) 
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:
 ( patch vulnerability: close the loopholes,  AlphaBay developers: releaser, several hours later: time) 