If you suspect someone of cheating and/or using third-party software, please use the report function on the suspects profile. The IM actively checks all reports and acts accordingly.
We do have an automated system that flags suspicious unlocks, but we need the communities help in finding the harder-to-detect profiles.
Honestly no offense but I'm gonna call cap on that. As I said, there are dozens of accounts in the top 2 to 3 hundred on the leaderboard that even a cursory glance shows they used third party software and no doubt these accounts have been reported dozens of times yet still remain tracked for the leaderboards.
In my opinion based on the flagrant cheating that I've seen getting through, there's only two possibilities as to why:
A) There is no automated system and the manual reports aren't taken seriously. I mean seriously, I have seen profiles on the leaderboard with games that have every achievement unlocked at the exact same time down to the second. If your automated system can't detect that then what exactly does it detect? Likewise if a manual review after a report can't determine that someone unlocking hundreds of achievements all at once isn't legit then how useful are your manual checks? Hell, I found an account in the top 100 that supposedly completed both Mass Effect 3 and Titanfall 2 in less than a minute. If your automated system and manual reviews can't realize that's BS... I don't know what to say.
B) Like placenta said above, there's some special treatment going on between the TSA staff and the people at the top leaderboard positions where their obvious cheating is overlooked. Let's talk about that same person in the top 100 that I mentioned above. There is no way you can honestly tell me that if TSA does have automated systems to detect cheaters and manual reviews that both work at finding and banning cheaters when there is someone in the top 100 with multiple games completed in less than a minute
unless there's people on the staff that are specifically protecting these people from being banned.
EDIT (11/20/23): Also, BS on that claim that whole "the IM actively checks all reports and acts accordingly." part. Remember that particular user that I mentioned above who had several games completed in less than a minute? Yeah, when I was checking their profile before initially writing this comment, I went to go report them only for it to tell me that they had already been reported. That was 2 weeks ago and it STILL says they already have a pending report, so the report on that individual has sat untouched for AT MINIMUM two weeks. Doesn't seem very "active" to me.
I also filed reports against three other users with clear, inarguable evidence of cheated achievements 4 days ago now and none of them have been touched either, so we'll see how long those go without being handled.