KroshAntiCheat

KroshAntiCheat v1.1.6 — Update Notes

Bug Fixes

• Fixed a thread-safety issue in violation tracking where the violation decay task (running async) could race with violation additions (running sync), risking ConcurrentModificationException under load.
• Fixed memory leaks in NoFall, Timer, Scaffold, and AutoClicker checks — per-player tracking data was never released on disconnect.
• Fixed a logic bug in SpeedCheck where sprinting + Speed potion fully bypassed the check instead of just adding the expected speed bonus.
• Fixed broken rolling-window logic in Timer and Scaffold checks that could false-flag legitimate players moving/building continuously.
• Replaced name-based bans with a UUID-based ban system — bans can no longer be bypassed by changing your in-game name.

New Detection Features

• KillAura: added an aim-angle check — flags hits landed well outside the attacker's actual view direction (catches clients that skip the client-side raytrace).
• KillAura: CPS detection now uses a proper exponential moving average instead of a raw per-second counter, reducing false positives from short legitimate bursts.
• AutoClicker: added click-interval consistency analysis — flags suspiciously uniform click timing even below the raw CPS threshold.
• Scaffold: added a look-angle heuristic — rapid downward block placement without looking down is weighted higher.
• KillAura verification probe now randomly spawns as an ArmorStand or an invisible AI-disabled mob, since some clients specifically filter ArmorStands from valid targets.
• New check: Velocity (No-Knockback) — detects players who fail to move after taking combat damage, when vanilla knockback should have displaced them.

Quality of Life

• Persistent violation/punishment logging to a log file (survives restarts).
• Optional Discord webhook notifications on kicks/bans (disabled by default).
• Tab-completion added for /kac.

Internal

• Various per-player data structures made thread-safe.
• Removed a packet-layer dependency on a Paper API class not present on 1.20.1, replaced with a more compatible reflection-based approach.