"These newly published documents demonstrate that collected communications not only include emails, chats and web-browsing traffic, but also pictures, documents, voice calls, webcam photos, web searches, advertising analytics traffic, social media traffic, botnet traffic, logged keystrokes, computer network exploitation (CNE) targeting, intercepted username and password pairs, file uploads to online services, Skype sessions and more..."

"The NSA’s ability to piggyback off of private companies’ tracking of their own users is a vital instrument that allows the agency to trace the data it collects to individual users. It makes no difference if visitors switch to public Wi-Fi networks or connect to VPNs to change their IP addresses: the tracking cookie will follow them around as long as they are using the same web browser and fail to clear their cookies..."

"This system enables analysts to access web mail servers with remarkable ease."

"The same methods are used to steal the credentials — user names and passwords — of individual users of message boards..."

"Other information gained via XKEYSCORE facilitates the remote exploitation of target computers. By extracting browser fingerprint and operating system versions from Internet traffic, the system allows analysts to quickly assess the exploitability of a target. Brossard, the security researcher, said that “NSA has built an impressively complete set of automated hacking tools for their analysts to use.”

"Given the breadth of information collected by XKEYSCORE, accessing and exploiting a target’s online activity is a matter of a few mouse clicks. Brossard explains: “The amount of work an analyst has to perform to actually break into remote computers over the Internet seems ridiculously reduced — we are talking minutes, if not seconds. Simple. As easy as typing a few words in Google...”