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" Many of the vulnerabilities we find in anti-virus products and corporate middleboxes — such as failing to validate certificates and advertising broken ciphers — are negligent and another data point in a worrying trend of security products worsening security rather than improving it , " they wrote .
 ( discover vulnerability: find,  Many of the vulnerabilities: vulnerability, we: discoverer, anti-virus products: vulnerable system, corporate middleboxes: vulnerable system, failing to validate certificates: capabilities, advertising broken ciphers: capabilities) 
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: find,  Many of the vulnerabilities: vulnerability, we: discoverer, anti-virus products: vulnerable system, corporate middleboxes: vulnerable system, failing to validate certificates: capabilities, advertising broken ciphers: capabilities) 