It has been brought to my attention that player's login information has been posted publically on a Turkish forum, so if you've played DeathKO in the past I suggest you change your passwords, if you happen to use the same login information in multiple locations. On top of that, there's potential security risk involving a series of private servers, that are currently under investigation. For now, private servers affiliated with OldSchoolKO or ByNeon will be investigated for zombie botnets, trojan backdoors and keyloggers. If you've played in the following servers, I suggest taking proper action of securing your data.
DeathKO (Allegedly not a threat anymore)
Ko4Fun
UskoGame (Edit: Read below)
Myko.gg
Justmyko
Also, be extremely careful with any OldschoolKO or SkynetACS affiliated server for the time being.
Updated.
Update 2:
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