Some of the main disadvantages of Computer Networks are:

• Virus and Malware: A virus is a program that can infect other programs by modifying them. Viruses and Malware can corrupt the whole network.
• High Cost of Setup: The initial setup of Computer Networking is expensive because it consists of a lot of wires and cables along with the device.
• loss of Information: In case of a System Failure, might lead to some loss of data.
• Management of Network: Management of a Network is somehow complex for a person; it requires training for its proper use.