Summary by Goodreads:
The tentacles of the Dark Web are tightening their grip around the world. From Moscow to Shanghai, Washington, UK, the Middle East and Europe, nowhere is beyond their reach. When a computer scientist dies mysteriously in Dubai, Jenny Bishop's nephew, Leo Stewart, is hired to replace him. Leo's life is soon in danger, but he is the only person who can find the key to prevent an impending global cyber-attack. With the help of Jenny and old and new friends, he must neutralize the threat before the world's vital services are brought to a halt in a flagrant attempt to once again redraw the borders of Europe and Asia. Can the deadly conspiracy be exposed before the world is thrust into a new Cold War?