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  1. #1
    CardingMafiaz's Avatar
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    Cool Tapping Computer Data Is Easy

    f

    --FEATURE ARTICLES AND REVIEWS-


    TAPPING COMPUTER DATA IS EASY,
    AND CLEARER THAN PHONE CALLS !

    BY RIC BLACKMON, SYSOP

    -------------------------------

    FOR SEVERAL YEARS, I ACCEPTED
    CERTAIN BITS OF MISINFORMATION
    AS TECHNICALLY ACCURATE, AND
    DIDN'T PROPERLY PURSUE THE
    MATTER. SEVERAL FOOLS GAVE ME
    FOOLISH INFORMATION, SUCH AS:
    A TAP INTERRUPTS COMPUTER DATA
    TRANSMISSIONS; DATA COULD BE
    PICKED UP AS RF EMANATIONS BUT
    IT WAS A MASS OF UNINTELLIGIBLE
    SIGNAL CAUSED BY DATA MOVING
    BETWEEN REGISTERS; ONE HAD TO
    BE IN 'SYNC' WITH ANY SENDING
    COMPUTER; DATA COULDN'T BE READ
    UNLESS YOU HAD A DIRECT MATCH
    IN SPEED, PARITY & BIT PATTERN;
    AND ONLY A COMPUTER OF THE SAME
    MAKE AND MODEL COULD READ THE
    SENDING COMPUTER. THIS IS ALL
    PLAIN SWILL. IT IS IN FACT, AN
    EASIER CHORE TO TAP A COMPUTER
    THAN A TELEPHONE. THE TECHNIQUE
    AND THE EQUIPMENT IS ALMOST THE
    SAME, BUT THE COMPUTER LINE
    WILL BE MORE ACCURATE (THE TWO
    COMPUTERS INVOLVED, HAVE ERROR
    CORRECTING PROCEDURES) AND
    CLEARER (DIGITAL TRANSMISSIONS
    HAVE MORE DISTINCT SIGNALS THAN
    ANALOG TRANSMISSIONS).

    FIRST, RECOGNIZE THAT NEARLY
    ALL DATA TRANSMISSIONS ARE SENT
    IN CLEARTEXT ASCII SIGNALS. THE
    LINES CARRYING OTHER BIT-GROUPS
    OR ENCYPHERED TEXTS ARE RARE.
    SECOND, THE SIGNAL APPEARS ON
    GREEN AND RED (WIRES) OF THE
    PHONE LINE ('TIP' AND 'RING').
    THE DATA IS MOST LIKELY ASYSCH-
    RONOUS SERIAL DATA MOVING AT
    300 BAUD. NOW THAT 1200 BAUD
    IS BECOMING MORE CHIC, YOU CAN
    EXPECT TO FIND A GROWING USE OF
    THE FASTER TRANSMISSION RATE.
    FINALLY, YOU DON'T NEED TO
    WORRY ABOUT THE PROTOCOL OR
    EVEN THE BAUD RATE(SPEED) UNTIL
    AFTER A TAPED COPY OF A TRANS-
    MISSION IS OBTAINED.

    IN A SIMPLE EXPERIMENT, A TAPED
    COPY OF A DATA TRANSMISSION WAS
    MADE WITH THE CHEAPEST OF TAPE
    RECORDERS, TAPPING THE GREEN
    AND RED LINES BEYOND THE MODEM.
    THE RECORDING WAS THEN PLAYED
    INTO A MODEM AS THOUGH IT WERE
    AN ORIGINAL TRANSMISSION. AT
    THAT POINT, HAD IT BEEN NECESS-
    ARY, THE PROTOCOL SETTINGS ON
    RECEIVING TERMINAL COULD HAVE
    BEEN CHANGED TO MATCH THE TAPE.
    NO ADJUSTMENTS WERE NECESSARY
    AND A NICE, CLEAR ERROR-FREE
    DOCUMENT WAS RECEIVED ON THE
    ILLICIT VIDEO SCREEN AND A NEAT
    HARD-COPY OF THE DOCUMENT CAME
    OFF THE PRINTER. THE MESSAGE
    WAS INDEED CAPTURED, BUT HAD IT
    BEEN AN INTERCEPTION INSTEAD OF
    A SIMPLE MONITORING, IT COULD
    HAVE BEEN ALTERED WITH A SIMPLE
    WORD PROCESSOR PROGRAM, TO SUIT
    ANY PURPOSE, AND PLACED BACK ON
    THE WIRE.

    WERE I TO HAVE AN INTEREST IN
    INFORMATION ORIGINATING FROM A
    PARTICULAR COMPANY, AGENCY, OR
    OFFICE, I THINK THAT I WOULD
    FIND IT FAR MORE PRODUCTIVE TO
    TAP A DATA TRANSMISSION THAN TO
    TAP A VOICE TRANSMISSION, AND
    EVEN MORE REWARDING THAN
    GETTING HARD-COPY DOCUMENTS.

    *SIGNIFICANT & IMPORTANT INFOR-
    MATION IS MORE CONCENTRATED IN
    A DATA TRANSMISSION.
    *SIGNIFICANT & IMPORTANT INFOR-
    MATION IS MORE EASILY LOCATED
    IN DATA TRANSMISSIONS THAN IN
    MASSES OF FILES OR PHONE CALLS.
    *TRANSMITTED DATA IS PRESUMED
    TRUE, AND WHEN ALTERATION IS
    DISCOVERED, ITS READILY BLAMED
    ON THE EQUIPMENT.
    *THE LAWS CONCERNING TAPS ON
    UNCLASSIFIED AND NON-FINANCIAL
    COMPUTER DATA ARE EITHER QUITE
    LACKING OR ABJECTLY STUPID.

    THE POINT OF ALL THIS IS THAT
    THE PRUDENT MANAGER REALLY
    OUGHT TO ENCRYPT ALL DATA
    TRANSMISSIONS. ENCRYPTION
    PACKAGES ARE CHEAP (A 'DES'
    PROGRAM IS NOW PRICED AT $30)
    AND ARE EASY TO USE.

    -------------------------------
    YOUR COMMENTS AND SUGGESTIONS
    ARE ALWAYS WELCOME. LEAVE A
    NOTE FOR THE SYSOP WHEN SIGNING
    OFF AND LET US KNOW WHAT YOU
    THINK ABOUT THESE ARTICLES AND
    REVIEWS. PLEASE FEEL ENCOURAGED
    TO SUBMIT MATERIALS WHICH YOU
    HAVE PREPARED. THANK YOU



    FUNCTIONS-> A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,R,S,T,U,W,X,Y,Z,?


    Uploaded to P-80 by Sally Ride along with
    the previous file by the Marauder on RSTS/E
    volume 1. There are 3 more volumes available
    on RSTS. This file is from the OPEN BBS.
    A system for Security professionals, well it
    used to be a system, seems it kept crashing,
    over and over, oops!
    Sally Ride:::Space Cadet

  2. #2
    proplayer101's Avatar
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    Interesting stuff, thanks for sharing.

  3. The Following User Says Thank You to proplayer101 For This Useful Post:

    CardingMafiaz (08-30-2015)

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