1549
The expert revealed the flaw this week at the Infiltrate Conference , the vulnerability could be exploited by attackers to execute a memory - corruption attack against affected devices over the air .
 ( discover vulnerability: revealed,  The expert: discoverer, the flaw: vulnerability, this week: time, vulnerability: 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: revealed,  The expert: discoverer, the flaw: vulnerability, this week: time, vulnerability: vulnerability) 