v4Guard Anti VPN v3.1.1

Access best-in-class fraud prevention, VPN/proxy detection and protection tools.
This version fixes a critical cache logic issue on Velocity.

The bug occurred in a specific scenario involving plugin event ordering. When a subsequent plugin denied the login event, our plugin incorrectly maintained a player/event reference due to improper disconnect reason validation.

Note: This issue is only presented in our Velocity plugin, Bungeecord is not affected. Users are advised to upgrade to avoid Out of Memory crashes / issues on their...
This version fixes a few specific scenarios that might be caused on edge cases.

We have fixed the following issues:
  • Enforce case sensitive usernames. This avoid a edge case with our protection stack that was detected and reported by a customer.
  • Proper invalidation of expired checks. This specific scenario can cause a memory leak if the backend was dropping your checks (for example, stability issues). And also, can be triggered by specific plugins that emulate logins. This was reported by a customer after their proxy crashed (while we were dropping his checks).
  • Fallback timeout of pending kicks. This can be triggered if the user had set an invalid connect-timeout on their config. For example, less than 3 seconds, meaning that our async logic would be non operational.
EULA: Free EULA
1,884 Views
118 Downloads
Aug 12, 2025 Published
Jun 17, 2026 Updated
5.00 star(s)
Average rating (8)
8.3 MB File size
Open source
  1. Yes
DRM-free
  1. No
Unobfuscated
  1. Yes
Type
  1. Protection
  1. Anticheat
  1. Technology
Supported software
  1. Bungee
  1. Velocity
Supported versions
  1. 1.21
  1. 1.20
  1. 1.19
  1. 1.18
  1. 1.17
  1. 1.16
  1. 1.15
  1. 1.14
  1. 1.13
  1. 1.12
  1. 1.11
  1. 1.10
  1. 1.9
  1. 1.8
  1. 1.7
Supported languages
  1. English
  1. Spanish
  1. Russian
  1. German
  1. French
  1. Polish
  1. Chinese
  1. Korean
  1. Japanese
Includes DRM
Yes
Source access (legacy)
Open source
Creator
Owner
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1,884 Views
118 Downloads
Aug 12, 2025 Published
Jun 17, 2026 Updated
5.00 star(s)
Average rating (8)
8.3 MB File size
Open source
  1. Yes
DRM-free
  1. No
Unobfuscated
  1. Yes
Type
  1. Protection
  1. Anticheat
  1. Technology
Supported software
  1. Bungee
  1. Velocity
Supported versions
  1. 1.21
  1. 1.20
  1. 1.19
  1. 1.18
  1. 1.17
  1. 1.16
  1. 1.15
  1. 1.14
  1. 1.13
  1. 1.12
  1. 1.11
  1. 1.10
  1. 1.9
  1. 1.8
  1. 1.7
Supported languages
  1. English
  1. Spanish
  1. Russian
  1. German
  1. French
  1. Polish
  1. Chinese
  1. Korean
  1. Japanese
Includes DRM
Yes
Source access (legacy)
Open source
Creator
Owner
Recommended for you
#1 BuiltByBit Plugin ~ Protects your server from crash packet exploits ~ Folia Support
5.00 star(s) 140 ratings
4,237 purchases
Create items, blocks, mobs, emojis, and more with automatic resourcepack generation!
5.00 star(s) 54 ratings
3,235 purchases
Protect your server from crash/dupe/packet exploits with the ultimate security fix plugin.
5.00 star(s) 45 ratings
3,135 purchases
High Performance | Customizable | Cross-Version | GeyserMC | Folia Support
4.50 star(s) 72 ratings
2,824 purchases
All-in-one dungeon creator. Create unlimited, timed dungeon experiences with your own builds
4.50 star(s) 72 ratings
2,587 purchases
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