Email And Network Security

Email And Network Security

Email And Network Security

With the number of home-based businesses at that time, computers and the Internet are becoming essential tools for businesses. But the active use of the computer company as a tool for banks and other financial transactions, has attracted unscrupulous individuals. They come with programs and virus threats to network security, hoping to intercept important files from home computers. The Computer Emergency Response Team (CERT) at Carnegie Mellon University, says there are several ways in which cyber-criminals threaten network security by e-mail. These methods seem harmless and are virtually invisible until it is too late.

These threats are: viruses spoofing e-mail e-mail. These are all considered deliberate abuse computer, but they are unknowingly spread by people who are aware of their possible effects on network security. CERT said that virus writers and malicious programs often use the ignorance of most people to disseminate their viruses.

E-mail spoofing occurs when sources of return e-mail other than the original source. The virus writer or the original source of the virus that manipulates it seems that the source wrote on the "From" is the true sender of the message. The majority of cases, these "messages" for network administrators ask users to customize and send a new password or other important information. Others reported receiving strange e-mails from banks and telephone companies. The recipient opens the message, thinking that this is an urgent reminder. The virus begins to spread throughout the computer. The operation is usually a virus like this is to weaken the security of the network, the virus writer to infiltrate the system.

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Viruses can also infiltrate systems via attachments to e-mail. This happens when a virus writer program sends a virus to people, disguised as an email attachment or innocent. The criminal usually gives a picture or a funny story to the e-mail address to entice recipients to open it. The receiver, thinking that the message is harmless and fun, send it to others. The virus is spread and network switches with minimal effort from the writer. email viruses are usually attached with the file extensions hidden or concealed. Most victims of attacks this harmless text documents or photos that you have read-only. "Txt" or ". Jpg" in the filename. CERT recommends that the first file extensions are not important in an attachment or a file. Confirmation is the last important because it shows how the mounting features. Extensions such as. "Exe" or. "VBS" means that the herd is managed as a program when the recipient opens.

There is no surefire way on how the spread of malware and viruses. Maintain network security, CERT recommends ignoring the odd email, even if they are controlled by an authority. Verify the origin of messages, "calling the agency" guided "them. For the best protection, CERT recommends that users avoid e-mail to download and save attachments in their computer unless you have verified the source. Installing firewalls and other anti-virus software also enhances network security.

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