In net user script, the attacker writes the following two-line script (obviously the word localaccountname is replaced with an actual local account name.):

The email it sent claimed to be from your system administrator. It would tell you that your email account had been infected by a virus and that you should open the attached file to get instructions. Once you opened the attached file, your system was infected. What is this?

What is IPv4 length?

A … is basically an intelligent hub; it works and looks exactly like a hub, with one significant difference. When a … receives a packet, it will send that packet only out the port for the computer to which it needs to go. A … essentially a hub that is able to determine where a packet is being sent.

Amplifier repeaters simply boost …

Ask several people to open their browsers and key the IP address of that machine in the address........... They should then be viewing the default website for that web server.

… is fast becoming as big a problem, even bigger than viruses.

Another new type of virus has been gaining popularity in the past few years, and that is the “… virus” or, put simply, a hoax. Rather than actually writing a virus, a hacker sends an email to every address he has. The email claims to be from some well-known antivirus center and warns of a new virus that is circulating. The email instructs people to delete some file from their computer to get rid of the virus. The file, however, is not really a virus but part of a computer’s system.