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Popular security products such as anti-viruses and middleboxes put customers at risk through poor transport layer security ( TLS ) interception implementations , researchers have found .
 ( discover vulnerability: found,  anti-viruses: vulnerable system, Popular security products: vulnerable system, middleboxes: vulnerable system, poor transport layer security: vulnerability, researchers: 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: found,  anti-viruses: vulnerable system, Popular security products: vulnerable system, middleboxes: vulnerable system, poor transport layer security: vulnerability, researchers: discoverer) 