3303
While we have been observing credential spills and credential - stuffing attacks for many years , the scale of both in 2016 was remarkable , " says Shuman Ghosemajumder , CTO for Shape . "
 ( data breach: credential - stuffing attacks, None) 
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:
 ( data breach: credential - stuffing attacks, None) 