WeMix - Liquid Staking audit

In the contract `StWEMIX` the role `_owner` has authority over the functions shown in the diagram below. Any compromise to the `_owner` account may allow the hacker to take advantage of this authority and - claim rewards, transfer fees to the treasury address, transfer other rewards to the staking pool, unlock withdrawal, and set phase two to `true` - set the fees for phase two 

`StWEMIX` is an upgradeable contract, the owner can upgrade the contract without the community's commitment. If an attacker compromises the account, he can change the implementation of the contract and drain tokens from the contract.

The contract is serving as the underlying entity to interact with one or more third party protocols. The scope of the audit treats third party entities as black boxes and assume their functional correctness. However, in the real world, third parties can be compromised and this may lead to lost or stolen assets. In addition, upgrades of third parties can possibly create severe impacts, such as increasing fees of third parties, migrating to new LP pools, etc. ```solidity=26 IStaking public staking; // immutable ``` - The contract `StWEMIX` interacts with third party contract with `IStaking` interface via `staking`.