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The hacker group known as The Dark Overlord ( TDO ) leaked today the first eight episodes of an upcoming TV game show , set to premiere on ABC on Sunday , June 11 .
 ( data breach: leaked,  The Dark Overlord ( TDO ): attacker, hacker group: attacker, TV game show: compromised data, ABC: victim, first eight episodes: compromised data, today: time, Sunday , June 11: 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:
 ( data breach: leaked,  The Dark Overlord ( TDO ): attacker, hacker group: attacker, TV game show: compromised data, ABC: victim, first eight episodes: compromised data, today: time, Sunday , June 11: time) 