Paul is a network administrator of the ACME wired and wireless LANs. One of his engineers says that they have experienced wormhole attacks over the last month. What does this mean?

A.
Attackers are sending ICMP packets to modify their routers.

B.
Two attackers have been working together at different places of the network.

C.
Someone has been sending unsolicited messages to Bluetooth-enabled devices.

D.
Instant messaging has been used to allow the wormhole worm into the environment.

Explanation:
An attacker can capture a packet at one location and tunnel it to
another location on the network. In this type of attack, there are two attackers at
each end of this tunnel (which is referred to as a wormhole). Attacker A could
capture an authentication token that is being sent to an authorized user, and then
send this token to the other attacker, who then uses it to gain unauthorized access
to a resource.