Internet connection as well as connection to a local network, along with the considerable extension of opportunities of obtaining the most various information, involves as well some inconveniences which, under certain circumstances, can turn into serious issues.
The main reason is that accessing to a huge number of the resources provided by a large number of computers both on Internet and a local area network makes the owned resources available for other users of the same network. Any computer connected to the internet or to a local area network is vulnerable to the following interactions:
- software from unknown publishers (which may contain Active X and Java applets);
- unauthorized access to local disc by other computers of the network;
- placement of extra files (e. g. Cookies) that may carry information about the user, preferences and visits;
- Trojan files and spyware intrusion;
- a threat of DOS-attack..