1308
The threat was the latest and , according to security experts , the most damaging set of stolen documents published by the Shadow Brokers , which is believed to be tied to the Russian government .
 ( data breach: published,  stolen documents: compromised data, the 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: published,  stolen documents: compromised data, the Shadow Brokers: attacker) 