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The ransomware employed by hackers , who have demanded Bitcoin payments from the victims , renders files stored on afflicted computers inaccessible completely .
 ransom: demanded Bitcoin payments
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: demanded Bitcoin payments