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But the operating system is riddled with serious security vulnerabilities that make it easy for a hacker to take control of Tizen - powered devices , according to Israeli researcher Amihai Neiderman .
 the operating system: vulnerable system; serious security vulnerabilities: vulnerability; take control of Tizen - powered devices: capabilities; Israeli researcher Amihai Neiderman: 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 operating system: vulnerable system; serious security vulnerabilities: vulnerability; take control of Tizen - powered devices: capabilities; Israeli researcher Amihai Neiderman: discoverer