You can’t get more adversarial than PvP MMORPGs

PvP MMORPGs face numerous security challenges, including network-level attacks, client-level cheating, and economic exploits. Mitigation strategies include using encryption, validating packets, setting rate limits, obfuscating traffic, and performing rigorous security assessments. It's crucial to avoid trusting client inputs and to implement strong authentication methods. Duplication of items and currency due to poor transaction handling can critically impact game economies. Balancing combat mechanics and curbing exploits like aimbots, teleportation hacks, and random number generator (RNG) manipulation are also essential to maintaining game integrity.