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GREENFIELD — Hancock Health fell victim to a cyber attack Thursday , with a hacker demanding Bitcoin to relinquish control of part of the hospital ’s computer system .
 ransom: a cyber attack
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: phishing, data breach, ransom, discover vulnerability, patch vulnerability 
Text: {0} 
Answer:
 ransom: a cyber attack