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For a hacker , holding an industrial control system hostage can also be lucrative , and far more devastating for the victim .
 ( ransom: holding an industrial control system hostage,  the victim: victim, a hacker: 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:
 ( ransom: holding an industrial control system hostage,  the victim: victim, a hacker: attacker) 