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Cathay revealed on Oct 23 that it discovered suspicious activity on its computer network in early March and confirmed in early May that personal data of its customers were accessed with no authorization .
 data breach: were accessed
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: were accessed