You are the team leader in your firm’s Cybersecurity Department, responsible for maintaining four critical corporate networks: AegisNet, MercuryGrid, HeliosCloud and VanguardLink 

Early one morning, you notice that several nodes across all four networks have been unexpectedly shut down. A quick inspection of the system logs reveals the exact sequence in which each node went offline. Your mission is to determine whether this incident represents a coordinated cyberattack targeting multiple systems simultaneously, or if it is merely the result of random hardware failures in aging equipment.

Time 0 : 

Time 1:  

Time 2: 

A) Was a attach in all networks

B) Was a attack only in VanguardLink

C) Was a attach only in AegisNet and VanguardLink

D) Was a attack only in AegisNet, MercuryGrid and VanguardLink

E) None of the above.

Original idea by: Carolina Albuquerque