1499
According to a blog post published a day later , CRITIFENCE experts only revealed they discovered two issues in the Modicon Modbus protocol used in PLC ( Programmable Logic Controllers ) , equipment that is often found in industrial facilities all over the world , and used to control and automate sensors and motors .
 ( discover vulnerability: revealed,  CRITIFENCE experts: 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: revealed,  CRITIFENCE experts: discoverer) 