In the late 1960's IBM knew its technology was being smuggled into Communist block countries. One designer decided to sent a message etched into one of the circuit boards of the IBM 360 computer. Written in Russian, the message loosely translates to, "When do you want to stop to swipe. Own design is better."
Your latest post incorrectly states the name of the U.S. company whose semiconductor engineers put a hidden message in their computers for GDR's Stasi semiconductor spies to see. I said "DEC" in my email because that was the name of Digital Equipment Corporation--not IBM.
Also, the message wasn't "etched into one of the circuit boards of the IBM 360 computer", as you stated--it was microscopically etched onto the silicon die of a DEC memory chip that was used in DEC (not IBM) computers, and could only be seen after someone used acid to dissolve the chip packaging to expose the die for reverse-engineering. I thought all that would be clear to you from the video, so I didn't belabor it.
You might want to correct that info on your website.
Cheers,
