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“ These spear - phishing emails were crafted to appear highly convincing , including being sent from legitimate email accounts suspected to have been previously compromised by the Callisto Group via credential phishing , ” F - Secure noted in a paper , adding that the group is continuing to set up new phishing infrastructure every week .
 spear - phishing emails: tool
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: phishing 
  Option: victim, attacker, attack pattern, purpose, damage amount, tool, time, place, trusted entity 
Text: {0} 
Answer:
 spear - phishing emails: tool