It’s two years after the Zero Day attacks, and cyber-security analyst Jeff Aiken is reaping the rewards for crippling Al-Qaida’s assault on the computer infrastructure of the Western world. But the West is under its greatest threat yet. A revolutionary, invisible trojan that alters data without leaving a trace – more sophisticated than any virus seen before – has been identified, roiling international politics. As the trojan penetrates Western intelligence, and the terrifying truth about its creator is revealed, Jeff finds himself in a desperate race to reverse it as the fate of both East and West hangs in the balance.

I just finished reading “Trojan Horse,” the sequel to “Zero Day” by Mark Russinovich.

Russinovich’s second techno-thriller reunites security analyst Jeff Aiken and now-girlfriend/business partner Daryl Haugen as they attempt to track down the latest threat to global security: a trojan horse, of unknown origin, that is subtly altering documents at the United Nations. The trojan is only accidentally discovered when it crashes the word processor of a UN employee authoring a critical document regarding Iran’s nuclear weapons program.

The first part of the book, as Jeff and Daryl pick apart the trojan’s code and attempt to trace it back to its authors, is full of the low-level technical details you’d expect from Russinovich after reading “Zero Day.” The second half is an international chase across Europe, the Middle East, and even China, as the depth of the conspiracy is revealed.

The inclusion of  recent technological threats, real-world events, and a healthy dose of the Stuxnet trojan make “Trojan Horse” a gripping, if not slightly scary, read.