1887
Ormandy has reported several critical security flaws in the password manager during the past week , and this weekend he has managed to discover a new one .
 ( discover vulnerability: discover,  a new one: vulnerability, this weekend: time, he: discoverer) 
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: discover,  a new one: vulnerability, this weekend: time, he: discoverer) 