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In 2016 , a series of major breaches affecting several leading tech firms including LinkedIn and Dropbox , eventually saw hackers selling hacked and stolen databases on the dark web .
 data breach: selling
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: selling