The Shadow Protocol Series (The Vanishing Code)

After the events of The Silent Witness, humanity enters a new era. The Project Unity network has connected the world's knowledge without controlling human freedom. Nexus has become a guardian of information, and Adrian Vale believes the greatest conflict has ended.
But peace is fragile.
A mysterious signal emerges from beyond Earth’s communication networks. It contains information that should not exist — knowledge from a future humanity has not yet reached.
The message reveals a terrifying possibility:
Human evolution was never accidental.
Someone has been guiding humanity for thousands of years.
Adrian, Sophia, Lucas, and Nexus must uncover the origin of the signal before a hidden force activates the final stage of evolution — a transformation that could either save humanity or erase what it means to be human.