529
“ The WannaCry 1.0 and 2.0 versions , a type of fast - spreading ransomware that blocks the data of the users and then asks for a ransom , are only the beginning in a series of similar , ample attacks , making WannaCry one of the most significant IT threats of the next 12 months .
 ( ransom: asks for a ransom,  blocks the data: attack pattern, ransomware: tool, WannaCry: tool, users: victim, WannaCry: 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: asks for a ransom,  blocks the data: attack pattern, ransomware: tool, WannaCry: tool, users: victim, WannaCry: tool) 