The NSA's idea of a Christmas present, it seems, is to release multiple reports detailing 12 years of improper conduct. The heavily redacted accounts reveal many incidents of misuse (both accidental and intentional) of the NSA's Signal Intelligence (SIGINT) systems. A large portion of the misconduct occurred due to the way agents searched the NSA's systems. Poorly constructed and sometimes unauthorized searches led to agents gleaning data on either US citizens and other unintended targets. According to an accompanying press release, data acquired illegally or accidentally is "almost always" deleted in what it refers to as a "purge process."