With the number of small businesses in the home at the time, computers and the Internet are quickly established as essential tools for business management. However, intensive use of computers in businesses and through banks and other financial transactions has attracted unscrupulous individuals. The Computer Emergency Response Team (CERT) at Carnegie Mellon University, says there are several ways that criminals threaten the security of the Internet through e-mail. CERT says that the writers of viruses and malware often exploit the ignorance of most users to spread their viruses.

E-mail spoofing occurs when displaying emails from sources other than the original source. The author of the virus or the original source antivirus program manages to believe that the source written in the “From” box is the actual sender of the message. Most cases involve “messages” for network system administrators to ask users to edit and sending new passwords or other sensitive information. Others report receiving emails from banks or foreign telephone companies. The recipient opens the email, thinking it is an urgent reminder. The virus begins to spread in the computer system. The usual function of viruses of this type is to weaken the security of the network to the virus writer to infiltrate the system.

viruses can also infiltrate systems e-mail attachments. This occurs when a virus writer programs a virus and send it to people disguised as a harmless e-mail or attachment. The recipient, thinking the message is harmless and fun, is to send to others. The virus spreads and disables network security with minimal effort from the writer. Email viruses usually come as attachments with file extensions hidden or concealed. “Jpg” file name. CERT reports that the first file extensions are not important in an attachment or a file. The attachment is the last important because it shows how the attachment. Extensions like “exe”. Vbs” means that the attachment is run as a program after the recipient opens. To maintain network security, CERT recommends ignoring strange emails, even if sent by an authority. Check the source of messages by calling the agency “sent” them. For better protection, CERT recommends that users of e-mail to avoid downloading and saving attachments in their equipment, unless you have checked their sources. Install firewall and anti-virus software also increases security of the network.