1182
In 2015 , HipChat reset user passwords after detecting and blocking suspicious activity in which account information was stolen from less than 2 percent of its users .
 ( data breach: was stolen,  account information: compromised data, its users: victim, 2015: time) 
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: was stolen,  account information: compromised data, its users: victim, 2015: time) 