You are the security manager of Microliss Inc. Your enterprise uses a wireless network infrastructure with access points

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You are the security manager of Microliss Inc. Your enterprise uses a wireless network infrastructure with access points ranging 150-350 feet. The employees using the network complain that their passwords and important official information have been traced.
You discover the following clues:
✑ The information has proved beneficial to another company.
✑ The other company is located about 340 feet away from your office.
✑ The other company is also using wireless network.
✑ The bandwidth of your network has degraded to a great extent.
Which of the following methods of attack has been used?

A. A piggybacking attack has been performed.
B. A DOS attack has been performed.
C. The information is traced using Bluebugging.
D. A worm has exported the information.