### File infected by an unknown strain of CDEF  report: unknown strain is detected, VirusScan places the following message in the repair other strains which may exist but have not yet been reported. If an In addition to the known strain of CDEF, VirusScan will also detect and  some anti-virus software. the original virus. Unfortunately, the new version escaped detection by There are only minor technical differences between the new version and A new version of the CDEF virus was discovered in February, 1993.  repair using MultiFinder, you will get an error message. always “busy,” and VirusScan is not able to repair them. If you try to use Finder instead of MultiFinder. Under MultiFinder, the Desktop files are When using VirusScan to repair CDEF infections under System 6, you must  for concern. other tool. Any CDEF resource in a Finder Desktop file, however, is cause you should not become alarmed if you see them with ResEdit or some CDEF resources are a normal part of the Macintosh operating system, so The CDEF virus is named after the type of resource it uses to infect files.  rebuilding the desktop. See the “Problem Clinic” section for details. As with the WDEF virus, you can remove a CDEF infection from a disk by  reports of problems on CDEF-infected systems. viruses, however, the CDEF virus is still dangerous. We have had many The virus does not intentionally try to do any damage. As with all  virus, it is not a simple clone of WDEF. It is a completely different virus. Although the behavior of the CDEF virus is similar to that of the WDEF  Fortunately, System 7 is completely immune to the CDEF virus.  rapidly. document files, or other system files. It spreads from disk to disk very “Desktop” files used by the Finder. It does not infect applications, CDEF is very similar to the WDEF virus. It only infects the invisible  quite widespread. virus. See the description of the MDEF virus for details. The CDEF virus is 1990. The same person who wrote the MDEF virus also wrote the CDEF The CDEF virus was first discovered in Ithaca, New York, in August,  xThe CDEF Virus