As information flows through any network, it is difficult to always know exactly what happens to a message en route, or if anyone may be reading or changing it. Unlike telephone circuits, computer networks are shared communication channels.
Sharing means that computers can receive information that was intended for other machines.
The easiest and most obvious way to manage risk on networks is to remove any sensitive information from computers connected to the network. However, this may not always be possible. Tufts invests significant resources to ensure the security of its information and networks. These controls include firewalls to prevent unauthorized access to servers and hosts containing sensitive information. Not all threats will be present in your environment.