1728
" Spear phishing emails with bespoke malware were first sent to staff in targeted companies , and once the attackers had successfully infiltrated their systems they were free to seek out a raft of sensitive data within .
 ( data breach: seek out,  sensitive data: compromised data, they: attacker, the attackers: attacker) 
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: seek out,  sensitive data: compromised data, they: attacker, the attackers: attacker) 