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China ’s largest Internet security company , Qihoo 360 , has found several high - risk security vulnerabilities in EOS ’s blockchain platform .
 Qihoo 360: discoverer; several high - risk security vulnerabilities: vulnerability; blockchain platform: vulnerable system; largest Internet security company: discoverer; EOS: vulnerable system owner
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:
 Qihoo 360: discoverer; several high - risk security vulnerabilities: vulnerability; blockchain platform: vulnerable system; largest Internet security company: discoverer; EOS: vulnerable system owner