Operation Gunman – how the Soviets bugged IBM typewriters (2015)
> The bug was fairly large and consisted of state-of-the-art integrated circuits and single-bit core memory. It was completely hidden inside a hollow support bracket at the bottom of the keyboard mechanism, and was invisible to the naked eye, but also to the detection equipment of the era. Only an X-ray scan could reveal the presence of the device, which is shown in the image below. It contains special components to hide its presence even from non-linear junction detectors (NLJD).Holy cow. I wouldn't have thought this was possible in the mid-1970s.Also the article says that the NSA didn't trust the CIA or State Department to handle the investigation properly, which was very interesting to read. Had the NSA already been established as a "we do tech better" agency?