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The affected Polish banks said the malware that infected their computers and servers encrypted its outgoing traffic and they were n't able to tell what the attackers stole .
 data breach: stole
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: stole