2473
The internet pioneer , which reported a massive data breach involving 500 million user accounts in September , actually knew an intrusion had occurred back in 2014 , but allegedly botched its response .
 data breach: an intrusion
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: an intrusion