3085
The department says the infection was discovered on December 12 , last year , and the crooks asked for a $ 4,000 ransom fee to unlock the files .
 ( ransom: asked for,  $ 4,000: price, the crooks: attacker, December 12 , last year: time) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( ransom: asked for,  $ 4,000: price, the crooks: attacker, December 12 , last year: time) 