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“ In all but one targeted intrusion we have attributed to FIN10 , the attacker ( s ) demanded a variable sum payable in Bitcoin for the non-release of sensitive data obtained during network reconnaissance stages , ” the researchers say .
 ( ransom: demanded,  the attacker: attacker, FIN10: attacker, Bitcoin: payment method) 
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:
 ( ransom: demanded,  the attacker: attacker, FIN10: attacker, Bitcoin: payment method) 