
At 03:20 AM 7/23/96 -0400, Rabid Wombat wrote:
Doesn't that make it vulnerable (detectable) to Tempest attacks?
No. Transmitting light via fiber doesn't emit EM. Anyway, the original post, as I recall, was about keeping sensitive data on a second hard drive, connected via (very thin, therefore harder to notice) fiber. Tempest monitoring was not a factor.
It occurs to me that a bare fiber could actually be (randomly) hung across treetops, roofs, power lines, and various other structures, over a many-block distance in suburban areas. Such a fiber wouldn't be protected very well, but it would probably last a few months. It would also be exceedingly hard to find its terminations, and tracing it would be a real pain. (It probably wouldn't be visible against a bright sky more than a meter or two away.) Jim Bell jimbell@pacifier.com