664
Before the surge in value , 1 or 0.5 bitcoin was a common ransom demand , with the idea that if the fee was low enough -- back then the ransom value worked out at a few hundred dollars -- this would encourage the victim to pay up .
 ransom: ransom demand
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: ransom demand