All throughout the development of almost any game, the question of cheating is always guaranteed to come up in conversation in one form or another. Among all different ways to cheat, the most common is changing your high score (not through playing the game) and uploading that score to the leaderboard. During her talk delivered at Casual Connect Tel Aviv, freelance game developer Nataly Eliyahu suggests, “Whether you use patterns to encrypt your score or track players actions on the server, it’s always a cat and mouse game.” This is important as developers can learn about the possible ways to prevent cheaters from changing their high score and falsely dominating the leaderboard. In the exchange between both the hacker and developer, we’ll look at tools and techniques the hacker uses, and the pros and cons of different approaches that developers can take.