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Security firm Kaspersky Lab reported that by 2:30 p.m. ET May 12 it had already seen more than 45,000 WannaCry attacks in 74 countries .
 ( ransom: WannaCry attacks,  May 12: 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: WannaCry attacks,  May 12: time) 