tx.origin Misuse

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/AccessControl.sol";

contract ProtocolManager is AccessControl {
  bytes32 public constant STRATEGIST_ROLE = keccak256("STRATEGIST_ROLE");

  constructor(address strategist, address backupAdmin) {
    _grantRole(DEFAULT_ADMIN_ROLE, strategist);
    _grantRole(DEFAULT_ADMIN_ROLE, backupAdmin);
    _grantRole(STRATEGIST_ROLE, strategist);
  }

  function executeStrategy() public onlyRole(STRATEGIST_ROLE) {
    // Strategy execution logic
  }

  function emergencyExit() public onlyRole(DEFAULT_ADMIN_ROLE) {
    // Sensitive operation
  }
}