2769
The researchers disclosed the vulnerabilities in the security products to vendors , but said the reception to the reports varied greatly .
 ( discover vulnerability: disclosed,  the vulnerabilities: vulnerability, the security products: vulnerable system, vendors: vulnerable system owner, The 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: disclosed,  the vulnerabilities: vulnerability, the security products: vulnerable system, vendors: vulnerable system owner, The researchers: discoverer) 