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Hāwera High School staff in South Taranaki switched on their computers on Monday to discover a message demanding payment for the return of encrypted data on a server containing students ' work and teaching resources , principal Rachel Williams said .
 ransom: demanding payment
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: demanding payment