gen. michael hayden brought the elite hacknological bacon home to the usaf...,

spiegel |  The NSA's TAO hacking unit is considered to be the intelligence agency's top secret weapon. It maintains its own covert network, infiltrates computers around the world and even intercepts shipping deliveries to plant back doors in electronics ordered by those it is targeting.

It was thanks to the garage door opener episode that Texans learned just how far the NSA's work had encroached upon their daily lives. For quite some time now, the intelligence agency has maintained a branch with around 2,000 employees at Lackland Air Force Base, also in San Antonio. In 2005, the agency took over a former Sony computer chip plant in the western part of the city. A brisk pace of construction commenced inside this enormous compound. The acquisition of the former chip factory at Sony Place was part of a massive expansion the agency began after the events of Sept. 11, 2001.

On-Call Digital Plumbers

One of the two main buildings at the former plant has since housed a sophisticated NSA unit, one that has benefited the most from this expansion and has grown the fastest in recent years -- the Office of Tailored Access Operations, or TAO. This is the NSA's top operative unit -- something like a squad of plumbers that can be called in when normal access to a target is blocked.

According to internal NSA documents viewed by SPIEGEL, these on-call digital plumbers are involved in many sensitive operations conducted by American intelligence agencies. TAO's area of operations ranges from counterterrorism to cyber attacks to traditional espionage. The documents reveal just how diversified the tools at TAO's disposal have become -- and also how it exploits the technical weaknesses of the IT industry, from Microsoft to Cisco and Huawei, to carry out its discreet and efficient attacks.

The unit is "akin to the wunderkind of the US intelligence community," says Matthew Aid, a historian who specializes in the history of the NSA. "Getting the ungettable" is the NSA's own description of its duties. "It is not about the quantity produced but the quality of intelligence that is important," one former TAO chief wrote, describing her work in a document. The paper seen by SPIEGEL quotes the former unit head stating that TAO has contributed "some of the most significant intelligence our country has ever seen." The unit, it goes on, has "access to our very hardest targets."

A Unit Born of the Internet

Defining the future of her unit at the time, she wrote that TAO "needs to continue to grow and must lay the foundation for integrated Computer Network Operations," and that it must "support Computer Network Attacks as an integrated part of military operations." To succeed in this, she wrote, TAO would have to acquire "pervasive, persistent access on the global network." An internal description of TAO's responsibilities makes clear that aggressive attacks are an explicit part of the unit's tasks. In other words, the NSA's hackers have been given a government mandate for their work. During the middle part of the last decade, the special unit succeeded in gaining access to 258 targets in 89 countries -- nearly everywhere in the world. In 2010, it conducted 279 operations worldwide.

Indeed, TAO specialists have directly accessed the protected networks of democratically elected leaders of countries. They infiltrated networks of European telecommunications companies and gained access to and read mails sent over Blackberry's BES email servers, which until then were believed to be securely encrypted. Achieving this last goal required a "sustained TAO operation," one document states.