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Ramesh Damodaran and Aliaksandr Shubnik , engineers at Infoblox , a Silicon Valley firm that does DNS , DHCP and IP management , uncovered the vulnerability and reported it to the ISC .
 ( discover vulnerability: uncovered,  Aliaksandr Shubnik: discoverer, Ramesh Damodaran: discoverer, the vulnerability: vulnerability, engineers: discoverer, Infoblox: discoverer, a Silicon Valley firm: 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: uncovered,  Aliaksandr Shubnik: discoverer, Ramesh Damodaran: discoverer, the vulnerability: vulnerability, engineers: discoverer, Infoblox: discoverer, a Silicon Valley firm: discoverer) 