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As noted by ZDNet , Hawkes , leader of Google 's Project Zero security team , shared the revelation on Twitter late Thursday , saying the iOS bugs were leveraged as zero - day vulnerabilities .
 Thursday: time; Google: discoverer; Hawkes: discoverer; leader: discoverer; Project Zero security team: 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:
 Thursday: time; Google: discoverer; Hawkes: discoverer; leader: discoverer; Project Zero security team: discoverer