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The group behind the attacks , named APT10 , was found to have used custom malware and " spear phishing " techniques to target managed outsourced IT service companies as stepping stones into the systems of an " unprecedented web " of victims according to the report 's authors .
 phishing: spear phishing
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: spear phishing