Editor’s note: This is part of an ongoing series of analysis on the emergence of cyberspace as battlespace. Botnets — a conglomeration of thousands (or more) hijacked computers known as zombies — are an important aspect of cyberwarfare. These networks can amass the processing power of many computers and servers from all across the globe and direct them at targets anywhere in the world. Botnets are one of the reasons STRATFOR has begun its coverage of cyberwarfare not with the amassed capabilities of an entire nation, but the transnational and subnational nature of the Internet itself. Interactive Cyberwarfare Timeline Roughly 1 million computers and servers reportedly were involved in the 2007 attacks on Estonian networks — the systems were located in some 75 countries, many of them Tallinn's NATO allies. This happened autonomously as individual bots took control of computers and began to take direction from those controlling the botnets.