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According to 360 ’s Weibo post , the vulnerability would allow an attacker to use a smart contract with malicious code to open a security hole , and then use the supernode to enter the malicious smart contract into a new block , thus putting all network nodes under the attacker ’s control .
 discover vulnerability: post
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:
 discover vulnerability: post