834
The flaw was discovered towards the end of February by Samuel Huckins of security company Rapid7 , and Fuze had disabled access to recorded meetings by the beginning of March .
 ( discover vulnerability: was discovered,  The flaw: vulnerability, February: time, Samuel Huckins: discoverer, security company Rapid7: 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: was discovered,  The flaw: vulnerability, February: time, Samuel Huckins: discoverer, security company Rapid7: discoverer) 