1254
This vulnerability was publicly disclosed over a year ago in March 2016 in DVR ( digital video recorder ) devices made by TVT Digital and branded by over 70 vendors across the globe .
 ( discover vulnerability: was publicly disclosed,  This vulnerability: vulnerability, over a year ago: time, March 2016: time, DVR ( digital video recorder ) devices: vulnerable system, TVT Digital: vulnerable system owner) 
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 publicly disclosed,  This vulnerability: vulnerability, over a year ago: time, March 2016: time, DVR ( digital video recorder ) devices: vulnerable system, TVT Digital: vulnerable system owner) 