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“ HospitalGown is a vulnerability to data exposure caused , not by any code in the app , but by the app developers ’ failure to properly secure the backend servers with which the app communicates , ” wrote the authors of the report released Wednesday .
 ( discover vulnerability: report released,  authors: discoverer, Wednesday: time, HospitalGown: vulnerability, vulnerability: vulnerability, data exposure caused: capabilities, the app: vulnerable system) 
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:
 ( discover vulnerability: report released,  authors: discoverer, Wednesday: time, HospitalGown: vulnerability, vulnerability: vulnerability, data exposure caused: capabilities, the app: vulnerable system) 