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Following a cyber attack in October 2015 , the ICO fined TalkTalk a record £ 400,000 after 15,656 individuals ' bank account details and sort codes were stolen .
 ( data breach: were stolen,  sort codes: compromised data, 15,656: number of victim, bank account details: compromised data, individuals: victim, £ 400,000: damage amount, October 2015: 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: were stolen,  sort codes: compromised data, 15,656: number of victim, bank account details: compromised data, individuals: victim, £ 400,000: damage amount, October 2015: time) 