z = −2.0 + 2.6·headless + 1.9·(1 − mouse_entropy) + 1.4·timing_regularity + 1.2·ja4_rarity + 1.5·ip_risk p_bot = 1 / (1 + e^(−z)) bot score = round(99 × (1 − p_bot)) # 1 = automated · 99 = human