1848
Carleton was the victim of a ransomware attack in November of last year , which locked down dozens of computers that would only unlock if the university paid a ransom in bitcoin .
 ransom: paid a 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: paid a ransom