1886
The prolific Ormandy also helped to make the firm more secure last year when he found “ a bunch of obvious critical problems ” in the service .
 ( discover vulnerability: found,  the service: vulnerable system, a bunch of obvious critical problems: vulnerability, he: discoverer, last year: time, the firm: vulnerable system owner, Ormandy: 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: found,  the service: vulnerable system, a bunch of obvious critical problems: vulnerability, he: discoverer, last year: time, the firm: vulnerable system owner, Ormandy: discoverer) 