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The company said evidence suggests an attacker may have accessed information stored on a legacy e-commerce platform during two periods : 1 January through 22 June 2016 and 1 October to 22 December 2017 .
 an attacker: attacker; information: compromised data; a legacy e-commerce platform: victim
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:
 an attacker: attacker; information: compromised data; a legacy e-commerce platform: victim