Patents by Inventor Carey Nachenberg

Carey Nachenberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Polymorphic virus detection module
    Patent number: 5696822
    Abstract: A Polymorphic Anti-Virus Module (PAM) (200) comprises a CPU emulator (210) for emulating the target program, a virus signature scanning module (250) for scanning decrypted virus code, and an emulation control module (220), including a static exclusion module (230), a dynamic exclusion module (240), instruction/interrupt usage profiles (224) for the mutation engines (162) of the known polymorphic viruses (150), size and target file types (226) for these viruses, and a table (228) having an entry for each known polymorphic virus (150). Prior to emulation, the static exclusion module (230) examines the gross characteristics of the target file for attributes that are inconsistent with the size/type data (226), and excludes polymorphic viruses (150) from the list (228) accordingly.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: December 9, 1997
    Assignee: Symantec Corporation
    Inventor: Carey Nachenberg