Expert Deduction #14
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The Case
The company's main fiber optic backbone was cut at Junction Box 7B in the basement during a 2 AM maintenance window, causing a 6-hour outage. Five people had some form of access: Kenji (IT lead), Vera (IT engineer), Dan (facilities), Marta (remote IT), and Wei (night security). Case file EXPERT-014.
Who cut the fiber optic cable?
Evidence (9)
#1Junction Box 7B is in the basement. Only IT staff and facilities have basement key-card access after hours.
#2The network schematic showing Junction Box 7B's exact location is on a restricted drive. Only IT staff (Kenji, Vera, Marta) can access it.
#3Kenji was on PTO. Flight records show he left the city at 6 PM the previous day.
#4Marta works remotely from another city. She has schematic access but no physical building access.
#5Dan (facilities) has basement access but cannot access the restricted network schematic drive.
#6Wei (security) was on front desk duty. Lobby camera confirms continuous presence from midnight to 4 AM.
#7Vera's key card logged a basement entry at 1:45 AM.
#8The corridor sensor near Junction Box 7B logged Vera's badge at 2:02 AM.
#9Vera recently received a written warning about a disagreement with management over network architecture decisions.