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As security researcher Amihai Neiderman of Equus Software mentioned to Motherboard , Samsung ’s Tizen OS has as many as 40 zero - day vulnerabilities still active and posing threat to the security of the operating system .
 ( discover vulnerability: mentioned,  security researcher Amihai Neiderman: discoverer, Tizen OS: vulnerable system, 40 zero - day vulnerabilities: vulnerability, posing threat to the security of the operating system: capabilities, Samsung: vulnerable system owner, Equus Software: discoverer) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( discover vulnerability: mentioned,  security researcher Amihai Neiderman: discoverer, Tizen OS: vulnerable system, 40 zero - day vulnerabilities: vulnerability, posing threat to the security of the operating system: capabilities, Samsung: vulnerable system owner, Equus Software: discoverer) 