3150
The first ransomware attack on a phone occurred in 2013 , according to the Check Point researchers , but until now has been confined to small numbers of victims , primarily in Eastern Europe .
 ( ransom: The first ransomware attack,  2013: 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: The first ransomware attack,  2013: time) 