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In a ransomware attack , hackers inject a network with malware that typically encrypts important data , and then demand payment in exchange for a key that releases the data .
 ransom: demand 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: demand payment