740
The campaign began Monday , according to cloud - based cybersecurity provider AppRiver , which counted more than 23 million related spam emails having been sent in less than 24 hours .
 phishing: having been sent
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:
 phishing: having been sent