Answer
The main security concern is that in an Ethernet-like bus topology every
node receives a copy of every message sent. A node is supposed to look
at the address field of the message to see if it is the desired recipient
and, if not, discard that message. However, a malicious node could keep,
read, and record every message on the network, even those that are not
intended for it.
Work Step by Step
The main security concern is that in an Ethernet-like bus topology every
node receives a copy of every message sent. A node is supposed to look
at the address field of the message to see if it is the desired recipient
and, if not, discard that message. However, a malicious node could keep,
read, and record every message on the network, even those that are not
intended for it.