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On February 28 , Singapore ’s defense ministry ( MINDEF ) disclosed that a breach in an Internet - connected system earlier this month had resulted in the personal data of 850 national servicemen and employees being stolen .
 ( data breach: being stolen,  employees: victim, national servicemen: victim, 850: number of victim, the personal data: compromised data) 
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: being stolen,  employees: victim, national servicemen: victim, 850: number of victim, the personal data: compromised data) 