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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
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: phishing, data breach, ransom, discover vulnerability, patch vulnerability 
Text: {0} 
Answer:
 data breach: was stolen