- LAN &
Four types of architecture
- Wiretapping or copper of fibre optic cables
- Sniffer programs
- Wireless leakage
The internet itself is a WAN. It was developed as a means for academic to share files, so it was not developed with security in mind. Messages are broken up into packets for transmission and are reconverted into messages at the target computer. The coding and decoding is done by TCP (transaction control protocol). Major uses of the internet for communication are email and ecommerce.