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On Tuesday , Mohamed Baset , a security analyst at ecommerce firm Linio México , published a proof - of - concept video demonstrating what he calls a Facebook flaw that allows an attacker to access audio or video files from Facebook servers and play them back .
 Mohamed Baset: discoverer; Tuesday: time
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: discover vulnerability 
  Option: vulnerable system owner, vulnerability, capabilities, time, vulnerable system version, discoverer, common vulnerabilities and exposures, supported platform, vulnerable system 
Text: {0} 
Answer:
 Mohamed Baset: discoverer; Tuesday: time