A computer virus that actively hides itself from antivirus software by either masking the size of the file that it hides in or temporarily removing itself from the infected file and placing a copy of itself in another location on the drive, replacing the infected file with an uninfected one that it has stored on the hard drive.
A Computer Virus Primer If you are one of the millions of computer users surfing the Internet, you need to be aware of the threat and protect yourself accordingly.
