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If users clicked OK , the malicious app locked the device and displayed the following message : You need to pay for us , otherwise we will sell portion of your personal information on black market every 30 minutes .
 ransom: displayed
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:
 ransom: displayed