3749
Two years prior to the first Ukraine incident , hackers began attempting to acquire legitimate login credentials by hacking non-operational systems at Ukrainian utilities – systems very much like Burlington Electric ’s laptop .
 ( data breach: acquire,  login credentials: compromised data, hackers: attacker, Two years prior: 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:
 ( data breach: acquire,  login credentials: compromised data, hackers: attacker, Two years prior: time) 