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Dan Tentler , founder of cybersecurity firm Phobos Group , who discovered the vulnerable hosts , warned the flaws are so easy to find that he believes he was probably not the first person to find them .
 ( discover vulnerability: are so easy to find,  the flaws: 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: are so easy to find,  the flaws: vulnerability) 