PvP servers attract hackers more than any other Minecraft game mode. The competitive nature of PvP creates a strong incentive for cheating - winning matters, and hacked clients offer a meaningful advantage. If you run a PvP server without a solid anti-cheat setup, you're not running a competitive environment. You're running a pay-to-win game where the currency is willingness to cheat.
The Specific Threats on PvP Servers
Know exactly what you're defending against. The most common PvP hacks in 2025 are:
- ✓Killaura - attacks all nearby players or entities in a wide arc, often with configurable reach
- ✓Reach hacks - extends melee attack range beyond the legitimate 3-block limit
- ✓Aimbot / aim assist - automatically targets the opponent's hitbox for consistent hits
- ✓Velocity hacks - reduces knockback received, making the player hard to stagger
- ✓Autoclicker / butterfly click macros - achieves inhuman click rates for CPS advantage
- ✓Scaffold / tower hacks - for servers with fall damage and building mechanics
Anti-Cheat Configuration for PvP
Grim Anticheat's default configuration is calibrated for general use. For a PvP server, you want to tighten it. Reach checks can typically be set lower - legitimate combat at 1.9+ happens at 3 blocks, and hitting at 3.5+ is reliably a cheat. Killaura detection should be set to flag rotation patterns that are too perfect to be human.
CPS (clicks per second) capping is a contentious topic. Butterfly clicking and jitter clicking are legitimate techniques that can reach 15-20 CPS. Autoclickers typically run at consistent inhuman rates above 20 CPS with minimal variance. If you want to cap CPS, set your limit at 20 and look for low variance in click timing rather than just high counts - that's the actual cheat indicator.
The Lag Compensation Problem
High-latency players are the main source of false positives on PvP servers. A player with 200ms ping will appear to teleport, hit at extended range, and move erratically - all patterns that anti-cheat watches for. Your configuration needs to account for expected latency ranges. Grim handles this better than older plugins by tracking latency per player and adjusting detection windows accordingly, but it still needs tuning for your specific server location and player base.
Handling Disputes and Evidence
PvP bans generate more disputes than any other type. A player who gets banned for killaura will often argue that their legitimate clicking style triggered a false positive. Having solid evidence before issuing a ban is especially important. Require moderators to record a spectating session before banning - video evidence is much harder to dispute than a list of flags from a plugin log.
Using Ban Network Data for PvP
Hacked client users tend to target PvP servers specifically. A player in the Warden Guard network with a Level 3 ban from another PvP server is a high-probability threat on your server. Configuring auto-enforcement at Level 2 and above catches the most egregious cases automatically, while letting your moderators handle lower-severity cases with judgment rather than automation.
Tournament and Event Protection
If you run ranked play or tournaments, consider stricter enforcement during those events. Temporarily lower your killaura detection threshold, increase spectating staff presence, and treat any positive flag as requiring manual review before the match continues. The stakes are higher, and so is the incentive to cheat.