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The Shadow Brokers , a hacking group believed to be behind a massive dump of National Security Agency cyber-weapons and software , were responsible for releasing the vulnerability in the computer systems used by government agencies and other companies .
 ( data breach: dump,  National Security Agency: victim, software: victim, hacking group: attacker, Shadow Brokers: 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: dump,  National Security Agency: victim, software: victim, hacking group: attacker, Shadow Brokers: attacker) 