KNC is a decentralized exchange for cryptocurrency assets. Instead of using a website your Kyber Network Investment and various other tokens can be traded straight from your wallets. This includes hardware wallets such as Trezor and Ledger in addition to your MetaMask wallet for Ethereum tokens.
Using their platform you can directly import and connect your accounts without your tokens leaving your person, instantly, and without having to transfer anything out of the safety of your wallet.
It seems Kyber is developing a truly decentralized trading platform that will provide the utmost privacy to investors without fear of centralization, and to the detriment of regulators as this trading platform will likely be out of their reach.
You can buy Kyber Network Tokens on a number of top-level exchanges, but honestly, the easiest way would probably be their own exchange! You can instantaneously trade your Ethereum for KNC tokens here directly from your hardware wallet or Metamask.
This is an ERC 20 asset, and as such you can store it in any compatible Ethereum wallet such as My Ether Wallet, Coinomi's mobile app or on the popular Ledger hardware wallet. The last one is quite convenient since you can exchange your tokens directly from the wallet using their DEX.