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 | Virus prevention Virus prevention has become an important issue in order to maintain the integrity of a corporate network plus the image of the company itself. With restriction that many companies impose on their users like no unapproved software, blocking of file sharing ports at the firewall, hardening of their servers, emails has become an avenue that virus writers targets at because it is so common for users to "accidentally” opens up an unknown attachment.Besides, the flaws in older versions of mail clients like Outlook Express 4 or 5, ensures that the attachments can be are processed and run immediately when user previews it.Unfortunately, there are still many companies that has been hit by this type of viruses but yet still not taking enough precautionary measures to prevent further infections. Installing the latest antivirus software will not necessary help you unless you properly patched up or update your mail clients. The antivirus software cannot scan or remove the virus if it is already launched and resident in memory. If you go through the inbox in your mail client and look at the headers on your incoming emails, and check the “X-Mailer:” portion, (for Outlook Express users, just click on the mail and press Ctrl-F3) you will be surprised a the no of your friends and associates that are still using the older and un-patched versions. Any version below 5.5 in Outlook Express is and below vulnerable to this exploit, even those above up till version 6 are vulnerable to another HTML version using the same techniques. No form of antivirus software can prevent these users to become potential victims for another wave of virus attack by viruses using similar techniques used by Klez and Badtrans virus. And Klez spreads very fast through open file shares too.Update your anti-virus definitions, your Windows and Office software regularly to the latest service packs or patches, don’t open attachments that contains extension (last three alphabet of a file) EXE, SCR, PIF or save to disk and scan for virus before opening. Set your Outlook Express not to script HTML contents by setting it to read mails as plain text. (Tools, Option, Read, tick "Read all message in plain text") Doing so will significantly reduce the chances of getting a virus or Trojan through the above channel. We provide technical support to clients who requires help in disaster recovery, virus removal and prevention, plus sales of antivirus software like Symantec Antivirus Corporate, Norton Antivirus Home, McAfee Antivirus, etc. | |
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