Root Cause

The getDealerCards function allows anyone to view the dealer's cards at any time:

This exposure includes the dealer's hidden cards, which should remain concealed until the game concludes.

Impact

• Unfair Advantage: Players can make decisions with full knowledge of the dealer's hand, violating the game's rules.

• Game Integrity Issues: The fundamental uncertainty of the game is compromised, leading to unfair outcomes.

• Financial Implications: Players may win more frequently than intended, resulting in financial losses for the contract.

Recommendations

• Restrict Access to Dealer's Cards: Modify the getDealerCards function to only reveal the dealer's cards after the game has ended.

• Access Control: Implement access control mechanisms to ensure only authorized views are allowed, possibly by using a game state variable.

• Partial Disclosure: If desired, only reveal one of the dealer's cards during the game, mimicking real blackjack.