A Look at the Inner Workings of NSA’s XKEYSCORE – The Intercept
XKEYSCORE is a piece of Linux software that is typically deployed on Red Hat servers. It uses the Apache web server and stores collected data in MySQL databases. File systems in a cluster are handled by the NFS distributed file system and the autofs service, and scheduled tasks are handled by the cron scheduling service. Systems administrators who maintain XKEYSCORE servers use SSH to connect to them, and they use tools such as rsync and vim, as well as a comprehensive command-line tool, to manage the software.
Your tax dollars at work lining pockets of spooks who download free open source software, cobble it together with spit and band aids, then use it to take your freedom away.