XKeyscore gives ‘widest-reaching’ collection of online data, analyzing the content of emails, social media and browsing history. The broadcaster published for the first time the source code from XKeystore has been revealed, but ARD didn’t provide information on how it has received it. According to the report, the two cases are not isolated, in the past documents leaked by Edward Snowden reveled the secret project Stinks to track user in Tor anonymizing network. The NSA surveillance program XKeyscore, according to a report published by German public broadcaster ARD, two Germany-based Tor Directory Authority servers have been targeted by the US intelligence. One of them - a 32-page overview of the program - was published in its entirety, albeit with several pages redacted.The German broadcaster ARD published a report that reveals that NSA XKeyscore has targeted two Germany-based Tor Directory Authority servers. In a message forwarded to The Associated Press by Guardian spokesman Gennady Kolker, journalist Glenn Greenwald said the article about XKeyscore drew on half a dozen documents supplied to him by Snowden in Hong Kong. "At some sites, the amount of data we receive per day (20+ terabytes) can only be stored for as little as 24 hours," the Guardian quoted one document as saying. So much content was being collected, the newspaper said, that it could only be stored for short periods of time - generally just a few days. The Guardian quoted one slide as saying that nearly 42 billion records had been captured by the system during a one-month period in 2012 - a rate of half a trillion records every year. The volume of data available to analysts through XKeyscore appears to be vast. Another slide seemed to show the program drawing data from a body codenamed SSO - an apparent reference to the NSA's Special Source Operations, which previous Guardian articles have described as capturing large numbers of communications between the United States and other countries. How and from where the program draws its data isn't completely clear, but one slide said XKeyscore was supported by 700 servers and 150 sites across the globe.
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