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Faramarz Shahi Savandi and Mohammed Mehdi Shah Mansouri are accused of using the Samsam ransomware to encrypt files on 3,789 City of Atlanta computers , including servers and workstations , in an attempt to extort Bitcoin from Atlanta officials .
 ransom: extort
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: extort