1604
Researchers believe data sets sold on the Dark Web are a sign that fraudsters are stealing tax info from employer databases -- meaning they get it before the taxpayers
 fraudsters: attacker; tax info: compromised data; employer databases: victim; sold on the Dark Web: purpose; data sets: compromised data
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: data breach 
  Option: victim, attacker, attack pattern, purpose, damage amount, tool, time, place, number of victim, compromised data, number of data 
Text: {0} 
Answer:
 fraudsters: attacker; tax info: compromised data; employer databases: victim; sold on the Dark Web: purpose; data sets: compromised data