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Antivirus Theory

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(1)c cc     

(2)       c              !     !   " c           .       #  !    $ %  &  '  %(   ) Scope of Protection            cc                     . ! c "  !  "     )%  %  *      #                          !   " ! ! #      "!" "  "  !  c  !  +      "  $   !    Effectiveness  .       !    ,--.      ,--.                 .   "   /,0 .     c  ! "c        "        12.c c                 / "       " c  3       !  c  c4 ! Ease of Installation   !  ! "  c c                  #  !               !                   !                 !                  ! !          .   "     .                    !         )"  .          !       )  " ,/0+5   " c                 Ease of Use # " "       )" 6 6  c                      %          ! )6"                          ""      !        !)      "  !                   5 " )   #    7  c "   !         "        " )  !  !      "     Features c      c       8             "   *    )!   " ) " &'"       !       )!     !             !             "   7          ' )           9: ) "  !!     )        .

(3) Updates    " c.      #     !  !     ""  )        " c     "   

(4) 7 6      c   ) c  

(5) (                          Help & Support     6  !   c    "          "       8        ! %     )  ! "    "               ! !         8   Summary cc         "    " " !    .    .      )       ! ;           !   "      c c     )  "      "        8     <             !7        c c        <       c   6                 6                    %        !%!    !    c c        ) "     " !c c "        ""  8 !   )  " !c c%             !  )!   "    %    !      !  !        c c                 !%   6  %      %   %    <  c c.   !      "c= c> "      % 6    "%  7"  <     <  %        !      !  !  "                 "       )           !  "    %  "   %  !            "     6                 !    )!                     ! c?                       .

(6) @@c    c            <!                        !     !            !     )                 !        )         ! 6!             " !                 '  . .       !   !         !         <!                 "    !   !   .      %          ! "   !  !  " !    !     " !    <      <      !      )       "             Scope of protection    c      !                               !     "  !        !   " "   )     !     ! ! !"  )   !   !     "    !   "    )     "      8) @c$  @   ) c               !   "    "!     " !   "                  !  "  !       !   !!         c !     !      ! "    !           !       ) " !"     "  !"    !!  "  !           ! A  !    .         !           c   !        7 .           "       %!! %  %  !      ) *       !  !" .       A   !                 #   !     "     "    !#  '     #        "   B  !#    !        )     '  <              !     # !  !"              Effectiveness   !     .      !              "     %  %  *%  %  % )  "        !!    ! "                  "  7         !        !                    "     !         !     .       !7      .        .  # !  !%      c    Ease of Installation     !        !     "                " <                    8)             +   ;   "  "          ! 8)    Ease of Use   c $-,-       !  !      !        !              !      "     "       !.

(7)       !   <"               " !         )!   !      "               "     )            !   ! ) "       "   " "       ")          #              # !   "  %        !      !  "   !         "   " 7!! ) 7 " #          !      Features   c $-,-     ' .                                          "     "       "      !  "  %  @ !                !     !   #    !    !    !              "      "       +  #               !  "            " "    )          " "     "  ! "  <       Updates     8)     "                 :   ,:          !               "                ?   "    !  Help and Support     "     c $-,- 6  "    .    '               BcC%      %                           7    "             !    "                       "       #             %" !           "     Summary     "   !           #    .       ! !  !           "      !             )!                  <!       .      .

(8)  @A9$   9$c   !          !  !                ) !    "     "          9$c 0               9, c       "    %   !   %    %            Scope of Protection               9$ c                        c  .       !         !                   !   %  *%  %  % )                  "  ! .  % )  !!  "           "      !          <  !!        ! <    Effectiveness     !                         .      !  .   .      !   !  !                           c              " 1/$.    ! !  c4 ! c     Ease of installation    9$ c                   ! 6!  #         !   !  "   ")!      " "  )"      !   " "           )!+  ;  c   D Ease of Use  !       !  " !      )!      )  !             !           "     "   !!   !   ! "  " !          "                !!!% !*! !     "                9$      "           c       "  )   " !   ) "      !   !     9$ !  #    !   !            " !   .      !                       !   "       7           "  !        " !    &  !6!"   ' ! "  Features                  !  c "     "      9$        !                   !   9$                     !                 "               !       !!    .  "      6            <     "   "           "       "   !     !      ")!        ! !    )          "    8)         )        &! '               %      !          Updates         ! !      !  " )   !    ) ! "        ")!  "    "        !.

(9) Help and Support       "           6   "          " 6 ! )  " "  !       8    )  !  "               "             "     8  " ) ""!   "          

(10)               <      !                         )        )                " !   .    )  6    ;                9$      )  6    ;   @A9$        ) ""  3       "       ! .    !     "   @A9$   !            !          !   !   )    !              E (      @A9$     c        "        c  @A9$+ " c     !       !  "      @A9$    .      8     " <                 "                                          .

(11) cAcc   c       "               )!    c    !      ! ! Security             !          % < % )<      !         " ! !      !        !         #    "                 "          )      F "       8     Strength !    " ; 3 "   G .   ! !   % * %  %3c   )!    G         )!     !   !           )      Installing  ! c   "  "  !  *H  G                   "!   G     !     ) "  :+    %    %   :2+  ! !        '   #  "      6      )!   #  "   <                )!   <    .         !   G              Characteristics of the firewall protection                !E A.         "             E ;     3         )%                   )   !      ! %     !    !            ) =;6B>E  " )         !      ) =;6B> ;        % 6 !      " ) )  c        )      E        !                  )           !  E  ) )               )E     " )         !           "  "           )       " )            !         A     E                                    7    !    "  "  .

(12) c IRc cI IRUS c c       "       <  .      !c   ! "         $-    <      "   )      c      !                c  c     c( cA =c  (   c  A   >%         "            Scope of Protection c     !      ! % % )% %              "                       "      % !      "         !      "   c  c     )        ! #   !  c          . "   ) Effectiveness c                 .     !   ! c      "              ,--.              .                "           c 22:.  )"!c   112.    " c      !   112. FAcc    $-     c    ! c  !  c4 Ease of Installation # " " c    1      !  # " "             c      .    .      !   c c    ) !   ,0+5            !           !   ! !                              Ease of Use        "  c    6 6       "     "              7 !   "  !     " !   <      "      !  !                 !         Features       !                         !                   )                      "      !#  " "    " "   )  #  " )           ! " " )"       "      )        !               "  "                        !                       "  7   " c         c( cA    !     "                 !                 "           !   Updates       "    .         !        !    "                 #       "   "   <    !    "    Help and Support       " c  BcC  )  ! "                   "  ! %     Summary        !   "       "   !    "             .   ! !         )  !              #          .         ! ;       !     .

(13) jI DEFEDER     )! .           )    %  .         !    A   c   "    " % A   c       "       )       !  "%                  %  "    ! A  c $-,-  "     !   F    !       $-,-  %               "    )                         "         !     " A  c "      !     !           "   %A  c $-,-  . !        !  %A  c 8     8      ;       )!     %     )!   !   %A         7         ! "      7 A  c "     '    "      " )   A  c   "         ) %   '    %        "         c  +  % A   c         c     c            '      A   c   8  7 ! I    < .   %    A  c  !  .  B   %A   c      "       " )           "   "  3c%          "          A  c .        %   <     %A  c     <       %        " < !         +  %               A   c           "    !     !  !%A  c        % "      8)    "   %                A  c        .         @                          "          )        %  <   !          !   %   <     " )   A  c    "        7    % A  c               !    A   c      "        )           A   c               !)   %      <%    "                                    "     !7      ;     <                  "   "%       <    "       <%A  c $-,- "          +  %A   c        <    !         "                      .

(14) cPERS  D )       D )?"    !       "     !  "          A        !  )      !             "     % % *%"                     !        !      9   "       " "         .          D )   F    %    +%         !   * !        %?  "      #  D )     D )c  B                "     "   "  !  Scope of Protection #   "  "               D )   !  !        !  *%   %  % ) #        )  !! % % < %  %              "   " Dc )             D )?c   !   " !    )"           "  ! !#      "!!  D )     "D ) !  !       Effectiveness  .    !                 !       !  "  D )      )   )                                               8)               )                       "                      )  "    !     )                 "  Ease of Installation # " "  D )  " "  !  7    !!  #        " < " "       # " "                %  %+ "     ! c     " )  "   !        !                 !                      !     "         "       !     "             .

(15) ÄCcFEE cI IRUS +c                         )!      "  #     "        !  .          !     " +c              *    +c     %   "       +c  c     ! Security  "             !   < " "    .    G"  $6                             c  +c                           %  %   *         "    % " )% %!     Strength +c  )  !         3    !     +c         ! )     "                )!       ! ;  3  ?"   % 6 %    6 *  )!   "    .   " c     ! )12/. Simplicity  !       )!    "    <!  !   G  "  G         !  )).    !  "  !  " !    <"    )!    "      "G  .     )!  +c  /:+5  c    '        "   )! "+c    ")!   G           Utilization        <                 ! .   !           +c   "  "    !         "        G           +c                           Characteristics              "   !   6            " 6       !     "   !       !%  !                 !    )! G       )! #  "         !  !.     )!    "    !     #  "  .               "           "    Updates +c      G   " 8          !                     G   "            .      )!                          .

(16) c  cI IRUS   "    !  " c Fc6  $-,-)          !    "          #        c F               !  "    !       c F           c Fc6    !  "   6 ?)       Scope of Protection #   "  "            .    "   !        c F                         !      #       !!%) %  ! !  +      c F   "         " c F              %  %  *  )          F  "   c F          !     c F #   "  "                       F                   Effectiveness    .     8              ! "   !         " .        .     1:.           "   c  3                2                      c F           .               !c F      2-H.               '    "  .       Ease of Installation # " "  c Fc     !)  !  #   "         "                   c F         ' "       .      !       !         !  !  H2+5      ,/+5  c      "  c F"  !      "  *               Ease of Use                #    )              " !      "   !     !     "              "        !!)   !")!      "  c F       ! !  !. !     Features     !   " !   !                  ! " "     !  !                             !   "            F     !       " "   * !      !    c F    !        #   !  "   !       ! #  !  " <   ?)    !    #   "   c F "     !  "    .    ! ) # %F ! %!3        )   "       "  !    %  " !    Updates c F           )     ! "#                    Help and Support             !    "       #                   )  ! " BcC    #    "     #        ! .

(17) Summary c F      "         !                         !       !         "   !     .

(18)

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