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TSB is a mysterious group that appeared in the summer of 2016 when they dumped on GitHub and other sites a trove of files they claim to have stolen from the Equation Group , a codename given to a cyber-espionage group many cyber-security experts believe to be the NSA .
 ( data breach: dumped,  they: attacker, TSB: attacker, a trove of files: compromised data, 2016: time, mysterious group: 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: dumped,  they: attacker, TSB: attacker, a trove of files: compromised data, 2016: time, mysterious group: attacker) 