In that case, it can destroy most of the files on the hard drive, rendering the computer useless until the operating system is reinstalled. The worm not only changes its message subject each time it infects, but each copy of the message is different from every other copy. Recovering deleted files Home and individual users of Microsoft Outlook should not open forwarded messages containing attachments of any type, ICSA says. With regard to recovering deleted files, ICSA says it will be very difficult. The infected files are overwritten by the virus and are recoverable only by restoration from backup.
People tend to be a little more cautious.
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