Selected viruses, spyware, and other threats: sorted alphabetically

Body of encrypted viruses is divided into two basic parts. The executive part is encrypted; to be executable it is decoded by the part of the code called “decryptor” before it is run. Encryption was used to make the analysis and detection of a virus more difficult. At present more or less polymorphic decryptors are being used. The most unpleasant are the distributed, multiple and very long polymorphic decryptors.

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