300
" Looking at a subset of 39 apps , we still found 280 million records exposed , a total of about 163 GB of data .
 ( data breach: exposed,  280 million: number of data, records: compromised data, data: compromised data, 163 GB: number of 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: exposed,  280 million: number of data, records: compromised data, data: compromised data, 163 GB: number of data) 