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I was wondering. I observed most of any MMO that are hack-prone area. Hacks used one-hit kills, stealing accounts, instant level up, aimbots (mostly MMOFPS), and questionable wallers (also in MMOFPS). These hackers might affect the fairness and excitement of the gamers which lead to doubts, abuse kickers (mostly in MMOFPS*, and misunderstandings. Even in MMORPG referred to hacks for instant money for purchase items. I saw these examples via Wikipedia.
This leads me to my question:
Which kind of MMO game platform or model would be best for making MMO games whilst reducing the possibility of hacking?
For example I could make an MMO game for the web browser (by website or via Facebook) or making an MMO game using installers/clients that fetches for patches and graphics that could run only through program via computer. What will help with preventing hacking and how?
In the case of making an installer/client based MMO games, are there anti-hack programs or techniques you can recommend in MMO context?