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BS-AntiCheat

Movement, combat, world, inventory and packet-level cheat detection that's actually tuned not to flag your legit players. Install it, and your builders, miners and PvPers keep playing , while cheaters get caught.
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BSAntiCheat-1.1.0.jar

File nameBSAntiCheat-1.1.0.jar
Uploaded
Oct 7, 2026
Downloads
10
Size
527.0 KB
File ID
9087828
Type
R
Release
Supported game versions
  • 26.3
  • 26.2
  • 26.1.2
  • 26.1.1
  • 26.1
  • 1.21.11
  • 1.21.10
  • 1.21.9
  • 1.21.8
  • 1.21.7
  • 1.21.6
  • 1.21.5
  • 1.21.4
  • 1.21.3
  • 1.21.2
  • 1.21.1
  • 1.21

What's new

[1.1.0] - 2026-10-07

Added

  • Minecraft 26.1–26.3 support: new attack and punch packets (PacketEvents 2.14), spear reach, Lunge, wind charges, bouncy blocks and geysers, new mounts and physics attributes.
  • New checks: NoFall, Sprint (hunger/blindness/omni-sprint), Mace smash, CrystalAura/AnchorAura, PingSpoof and extended BadPackets.

Fixed

  • Closed detection bypasses: ender pearl/chorus teleport grace, Timer pauses, packet bundling, oscillating or slowly sinking Fly/BoatFly, speed pulsing, dig-packet AutoClicker suppression, spoofed ground flag for InventoryMove, uncapped ping allowance.
  • Fewer false positives: Jesus at shores and piers, flight/gamemode changes, fast-moving reach targets, vein-miner bursts (Nuker/FastPlace), team-fight KillAura, X-Ray in overgrown caves and dense veins, knockback in cobwebs/powder snow, riptide while gliding.
  • Violation levels now survive a relog; punishment commands run in order on the correct Folia thread.
  • PerformanceAnalyzer migration no longer imports Discord or silent-player settings into fresh installs; foreign keys from earlier imports are removed.
  • Discord alerts share one rate limit per webhook and retry on HTTP 429; fallback log is flushed periodically.

Changed

  • Timer check uses the client tick-end packet; lag detection uses a short window (per region on Folia).
  • Update notice shows clickable Modrinth and CurseForge links to operators on join.
  • Validation for all numeric config values; clear --db deletes by player UUID.
  • Console messages are English throughout; /acsilent category names come from the language files.
  • Various smaller thread-safety, memory and performance fixes.

API

  • ViolationEvent now fires on the thread owning the player (region thread on Folia), one tick later than before.

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