So, I just left a team after playing 3 (full) matches with them. I won't name names, but one of them was threatening DDOS to opponents, and when they wouldn't leave, he'd DDOS them. I ended up playing with them for 3 matches before I was able to fully piece together that was they were doing with absolute certainty. (As I write this, I'm in a party of one of the victim teams, and they matched up with them again, and were DDOSed.) Summary of what happened: Solo'd into a match, they invited me to their party. I was returned to to orbit after that, saying I was removed from game world (probs not important). First match actually playing with them after I rejoined them and joined their fire team, free win (where the enemy team doesn't show up on roster, join into empty game. I've had that happen before so I don't think it was anything special). Second match, one or two people left/DQ'd, I mentioned it was weird and he said that's what happens when you 4-queue, people leave. I figured he was right, after a couple rounds, rest of their team left. I msg'ed one of the people asking what happened. He said DDOS, so I noted it but also realize some people can get salty. Nevertheless, I wanted more proof just in case. Third match, one or two left (don't remember, I think two though). One person said lag swipe, another person said they think their teammate just disconnected, so I searched up their gamertags for match history, to find that the match history looked fine (from what I could see, maybe I'm just bad at looking them up. I used bungie.net). Fourth match, DQ'd opponents, eventually all of them. After that, I left and the victims of that team invited me to a party because I messaged asking if they were DDOSed, and let one know I needed to know so I could report them. I let them know the person that I thought was doing it, and I, along with the rest of them, mass reported them. I tried on bungie.net, but only one account was found. I write this because I feel terrible for what I was apart of, and I'm ashamed I didn't report them after the first incident that I witnessed. This is not a desperate cry to spare me, for I realize that while I did not commit the actions, I was still a part of fire team responsible. This is simply my confession, and my public and personal apology. Thank you for taking the time to read this.