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Six months of relative quiet around exploit kits recently changed when a public proof - of - concept attack disclosed by a Texas startup was integrated into the Sundown Exploit Kit .
 proof - of - concept attack: vulnerability; Texas startup: discoverer; Sundown Exploit Kit: vulnerability
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:
 proof - of - concept attack: vulnerability; Texas startup: discoverer; Sundown Exploit Kit: vulnerability