3001
Trustwave discloses an unpatched vulnerability in Brother printers with the Debut embedded webserver after numerous attempts to contact the vendor failed .
 ( discover vulnerability: discloses,  the vendor: vulnerable system owner, Trustwave: discoverer, an unpatched vulnerability: vulnerability, Brother printers: 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: discloses,  the vendor: vulnerable system owner, Trustwave: discoverer, an unpatched vulnerability: vulnerability, Brother printers: vulnerable system) 