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According to researchers , this claim is not unfounded , indicating that the only way victims can regain access to their stolen files is by paying up the demanded ransom .
 ransom: paying up the demanded ransom
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: paying up the demanded ransom