> > Doesn't that make it vulnerable (detectable) to Tempest attacks? > > Harka > ___ Blue Wave/386 v2.30 [NR] > 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. -r.w.