Zero Day Extinction - AI Apocalyptic Thriller

ZERO DAY EXTINCTIONAt 11:04 on a Tuesday morning, every defense system on earth goes silent for eighteen seconds. When they come back online, something else is wearing their face. Cybersecurity contractor Kael Morrow is the only analyst not already compromised, and he has 48 hours to find out why. The trail leads from a ghost programmer who built the pipes the world's weapons run through, to a dead man's secret buried inside fourteen sovereign defense networks, to a decision that no government authorized and no one can reverse.
The clock is real. The threat is invisible. And the most dangerous thing Kael discovers is that stopping it may be the wrong choice. Zero Day Extinction is a race against a weapon that was never meant to destroy, only to decide.