COS token
Once these fees are deposited to this contract the contract automatically distributes them to token holders. In short the token pays you a part of the fees the exchange makes daily (To better understand this think about how much money you would make if Binance were to offer even a tiny portion of its fees to you as your income). Note because this is carried out as a DAO, COS token is not classified as a security.
I dont understand what is the difference between DAO and security? In my book if the thingy pays out you part of their income , it is the purest definition of security and regulators in shorter or longer future will consider it as well.
On topic of this exchange, I have used it about year ago and the overall experience was positive.
It looks that their token has not large volume currently and as a speculative asset could be a good one especially if you are researched their management.
Difference is that you have to do something manually. For example to get your daily payout you need to go to the exchange and click the distribute function and then pay the transaction fee for the funds to move from the smart contract to your wallet. It is because of this manual work required that COSS is not classified as a security, whereas something like KucoinShares is a security.