2575
Most ransomware come with some sort of encryption key that is used to unlock the stolen data files once ransom is paid , though there is absolutely no guarantee that the perpetrator will keep their end of the bargain once money is transferred .
 ( ransom: ransom is paid,  ransomware: tool) 
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: ransom is paid,  ransomware: tool) 