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- From: strnlght@netcom.com (David Sternlight)
- Subject: Re: Spycatcher
- Message-ID: <1993Jan25.182906.9035@netcom.com>
- Organization: Netcom - Online Communication Services (408 241-9760 guest)
- References: <1993Jan23.181520.18783@magnus.acs.ohio-state.edu> <1993Jan25.154016.10434@cas.org> <fraserdt.727978978@unixg.ubc.ca>
- Date: Mon, 25 Jan 1993 18:29:06 GMT
- Lines: 33
-
- In article <fraserdt.727978978@unixg.ubc.ca> fraserdt@unixg.ubc.ca (David T.S. Fraser) writes:
- >In <1993Jan25.154016.10434@cas.org> jac54@cas.org () writes:
- >
- >>In article <1993Jan23.181520.18783@magnus.acs.ohio-state.edu> jebright@magnus.acs.ohio-state.edu (James R Ebright) writes:
- >>>
- >>>Both books are great reads! (Ever wonder why regular typewriters are
- >>>not used to type crypto messages...Read SPYCATCHER for that and much more.)
- >
- >> That's regular ELECTRIC typewriters, regular manual typewriters
- >> are very popular with the security-conscious.
- >
- >Same goes for PCs, too.
-
- I understand from my current reading, including a recent and excellent book
- on the CIA, apparently published with CIA cooperation to help with their
- more "open" image, and filled with revelations not previously seen, that
- manual typewriters are no more secure than electric. One simply uses
- different techniques for eavesdropping. In the case of "golf-ball"
- electrics, the motor is on for different lengths of time depending on the
- characters typed. In the case of manual ones, the sound is different
- depending on the key being struck.
-
- The book (sorry I haven't a pointer--I returned it to the library) has a
- particularly fascinating account of how the Soviets installed eavesdropping
- transmitters in the vertical support bar of U.S. typewriters in such a way
- that the workmanship was completely undetectable visually and the bugs had
- the same X-ray density as the support bar and thus didn't show up via
- X-ray. It took newer scanning techniques to spot the anomalies in the
- support bars and lead to the detection of the hidden bugs.
- --
- David Sternlight
- RIPEM Public Key on server -- Consider it an envelope for your e-mail
-
-