Virus Information

What is a computer virus?

A computer virus is a type of malware. The most basic description of a computer virus is: a small program written to alter the way a computer operates, without the permission or knowledge of the user. In order for the malware to be a virus, it must meet two criteria:

1. It must execute itself. It will often place its own code in the path of execution of another program – this is how computers commonly get re-infected.
2. It must replicate itself. For example, it may replace other executable files with a copy of the virus infected file. Viruses can infect desktop computers and network servers alike.

Some viruses are programmed to damage the computer by damaging programs, deleting files, or erasing the disk. Others are not designed to do any damage, but simply to replicate themselves. Some viruses cause symptoms noticeable to a computer user, but many do nothing in order to avoid being noticed.

What can I do to avoid being infected?

With all the information we’re bombarded with these days, it is easy to believe that malware and viruses lurk in every file, every email, and every Web site. However, a few basic precautions can minimize your risk of infection. Practice safe computing and encourage everyone you know to do so as well.

• Be suspicious of email attachments from unknown sources. Do not open any emails or email attachments from unknown sources.
• Only visit Internet sites that are legitimate – if you do not recognize the link, don’t click on it.
• Verify that attachments have been sent by the author of the email. Newer viruses can send email messages that appear to be from people you know.
• Back up your data frequently. LLUMC Information Services (HS) backs up network drives on a nightly basis – keep all important documents in either your personal (H:) drive or departmental share (S:) drive.

If you have any questions, please contact the IS Service Desk at x 48889.