I angrily expose the egregious practices of the Deriv platform. The actual payout probabilities for "up/down" contracts on the platform systematically deviate from theoretical values. For example, for a contract with a 55% payout ratio, the theoretical win rate should be 54.5%, but the actual monitored win rate is only 48.7% (sample size ≥ 2,000). Even worse, when prices approach critical levels, the platform experiences significant "price jumps": within the final five seconds, quotes suddenly jump 0.2-0.5 pips in the opposite direction, turning previously profitable contracts into losses. These abnormal jumps occur 77% against the trader. Quotes from their proprietary platform (Deriv MT5) consistently deviate from other mainstream data sources, with an average latency of 800 milliseconds—enough for their algorithms to implement price adjustments that are unfavorable to their clients.