Poject Hail Mary, The Martian
Both by Andy Weir.

Also M.O.N.A. and S.I.N.O.N. by Dan T. Sehlberg

The books by Andy Weir are hard sci-fi books. Very grounded in physical/realistic expectations but with a sprinkle of "the future".

The books by Dan Sehlberg are IT thriller-like novels.
Basically something like current 'Neuralink'.
The first books plot is about a scientist developing a brain-computer interface enabling the user to visit cyberspace in a sort of advanced VR like world but full on inside instead of just goggles you put on.
His wife trials it, visits her job sites web page during a cyber attack on the jobs IT-infrastructure, get's in contact with the malware there and brings the digital virus inside her to the real world.
Now the digital malware/virus has become a biological one. The scientist now wants to find the cure for the illness.