Hacker #1: Seen by multiple people capping a node in Civil War from stealth.
Happened to me once. ACW, on my Sin, Imp vs Pub. We had both East & West, they had mid. They where hammering West hard, however we were holding out. I died, so I respawned and used the direct speeder to get to West. Once I arrived I checked the turret for cappers: there was none, so I redirect my attention to the battle. Around 2-3 seconds later we lose West. There was no way the Reps could've capped West within the 2-3 seconds of me looking away.
There was this one Shadow that kept coming back to West during the battle, I can remember because I saw him in his stealthed form multiple times, so I would guess it was him. Lost the match thanks to the hacker.