NSA Watchdog Concluded One Analyst’s Surveillance Project Went Too Far
bloomberg.com
bloomberg.com
The FoIA'd investigation: https://assets.bwbx.io/documents/users/iqjWHBFdfxIU/rgMApjak.... (PDF)
The target of the investigation replies to it starting in page 96. He comes off as a jerk, at least in the non-redacted parts.