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The breach , which is understood to have been malware - based , targeted the online portal for the retailer 's florist arm , Debenhams Flowers .
 malware - based: tool; the online portal: victim; the retailer 's florist arm: victim; Debenhams Flowers: 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:
 malware - based: tool; the online portal: victim; the retailer 's florist arm: victim; Debenhams Flowers: victim