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Grossman and Jake Davis , a former LulzSec hacker , confirmed that the bug existed as of Tuesday morning and analyzed the potential attacks that bad guys could do if they were to exploit it .
 the bug: vulnerability; Grossman: discoverer; Tuesday morning: time; Jake Davis: discoverer; a former LulzSec hacker: 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 bug: vulnerability; Grossman: discoverer; Tuesday morning: time; Jake Davis: discoverer; a former LulzSec hacker: discoverer