1017
The two researchers first located a small number of vulnerable devices , including the Cisco DPC3928SL cable modem that 's now part of Technicolor 's product portfolio following the company 's acquisition of Cisco 's Connected Devices division in 2015 .
 ( discover vulnerability: located,  vulnerable devices: vulnerable system, the Cisco DPC3928SL cable modem: vulnerable system, researchers: 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: located,  vulnerable devices: vulnerable system, the Cisco DPC3928SL cable modem: vulnerable system, researchers: discoverer) 