[dspillett]

Not sure why you are being downvoted for not understanding and asking a question to fix that, as the matter is relevant to the post you replied to...

Essentially anti-cheat code needs that level of access to detect/circumvent cheat enabling code that has that level of access - it is a protracted arms race. There is money and kudos to be made through gaming, so people will cheat by any means necessary.

You can't remotely prove the entire state of the client unless you entirely control the client, and no current OS can offer the level of sandboxing required to offer that assurance. If you can't 100% trust the state of the client then no transport level encryption and such will fix that - you are just guaranteeing the faked data is transported safely at that point.

Of course that level of control being required for single player games is much more dubious, so there is a grain of truth in the more tin-foil-hat sounding theories about identity tracking & such on the part of the publishers.