When I was in high school I was reading William Gibson's sci-fi novels. In his Count Zero (the sequel to Neuromancer) there were companies that were developing biosoft: computers merged with human human functioning via lab-grown cancer cells. It was speculative fiction based on some then-fringe ideas.
What Cortical Labs has now done is beyond that.
Newtons Wake, by Ken Macleod
Beginning of the plot synopsis:
“In the late 20th century, at the start of a war between the European nations and the United States, a US Army AI directing weapons overcame its programming to become self-aware. Then followed the “Hard Rapture”, an explosive expansion and evolution of computer systems that left most of humanity dead or devoured while the AIs and assimilated persons progressed into posthumanity beyond human comprehension and departed for parts unknown.”
There is some type of software/programming now that can overcome other language/operating systems. In the SciFi work the AI realizes a capability to overwrite/hack human brains and subsequently advances orders of magnitude with the processing capacity of millions of citizens.