Comment by truekonrads

The writer Viktor Pelevin in 2001 wrote a sci-fi story "The Air Defence (Zenith) Codes of Al-Efesbi" where an abandoned FSB agent would write on the ground in large text paradoxical sentences which would send AI enabled drones into a computational loop thereby crashing them.

https://ru.wikipedia.org/wiki/%D0%97%D0%B5%D0%BD%D0%B8%D1%82...