970
The hacker or hackers , who go by the name “ thedarkoverlord , ” also claim to have stolen unreleased content from ABC , Fox , National Geographic and IFC .
 ( data breach: have stolen,  The hacker: attacker, hackers: attacker, thedarkoverlord: attacker, unreleased content: compromised data, ABC: victim, Fox: victim, National Geographic: victim, IFC: victim) 
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: have stolen,  The hacker: attacker, hackers: attacker, thedarkoverlord: attacker, unreleased content: compromised data, ABC: victim, Fox: victim, National Geographic: victim, IFC: victim) 