1359
After spending two weeks attempting to alert the UK - based IoT manufacturer , Pen Test Researchers decided to go public with their findings yesterday .
 ( discover vulnerability: go public,  Pen Test Researchers: discoverer, their findings: vulnerability, yesterday: 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:
 ( discover vulnerability: go public,  Pen Test Researchers: discoverer, their findings: vulnerability, yesterday: time) 