1292
The hotel group does not believe the data breach extended past December 29 , 2016 , although that can not be entirely ruled out as it took until February / March for all of the affected hotels to be investigated and for confirmation to be received that the malware had been removed .
 ( data breach: the data breach,  December 29 , 2016: time, The hotel group: victim) 
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: the data breach,  December 29 , 2016: time, The hotel group: victim) 