1835
Often the fraudster will claim there has been suspicious activity on an account , ask the individual to verify or update their account details , or claim they are due a refund .
 suspicious activity on an account: attack pattern; fraudster: attacker; individual: attacker; update their account details: purpose
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:
 suspicious activity on an account: attack pattern; fraudster: attacker; individual: attacker; update their account details: purpose