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The documents describe an internal CIA group called UMBRAGE that WikiLeaks said was stealing the techniques of other nation - state hackers to trick forensic investigators into falsely attributing CIA attacks to those actors .
 data breach: was stealing
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 stealing