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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 .
 the service: vulnerable system; a bunch of obvious critical problems: vulnerability; he: discoverer; last year: time; the firm: vulnerable system owner; Ormandy: discoverer
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: discover vulnerability 
  Option: vulnerable system owner, vulnerability, capabilities, time, vulnerable system version, discoverer, common vulnerabilities and exposures, supported platform, vulnerable system 
Text: {0} 
Answer:
 the service: vulnerable system; a bunch of obvious critical problems: vulnerability; he: discoverer; last year: time; the firm: vulnerable system owner; Ormandy: discoverer