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Technology companies are starting to respond to a new Wi - Fi exploit affecting all modern Wi - Fi networks using WPA or WPA2 encryption .
 ( discover vulnerability: affecting,  Technology companies: vulnerable system owner, Wi - Fi networks: vulnerable system, WPA: vulnerable system, WPA2: vulnerable system, a new Wi - Fi exploit: vulnerability) 
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: affecting,  Technology companies: vulnerable system owner, Wi - Fi networks: vulnerable system, WPA: vulnerable system, WPA2: vulnerable system, a new Wi - Fi exploit: vulnerability) 