Steam Hacker Groups

I have heard people admit to having hired “hackers” from Steam to the effect of social media hitmen. Some services offered include:

  • Sockpuppeting
  • White-knighting
  • Comment spamming

I don’t know if any of these folks actually have the capacity to steal accounts/log-in info, but I have been told that they go by the tag of "hacker"s. I am also led to believe that they have groups of their own, but the only “Steam Hacker Groups” I have ever seen for myself are just people sharing cheats and exploits for games.

Has anyone else had a close encounter with the Steam Hacker kind?