M2Guard v1.5 introduces major improvements focused on Metin2 anti-cheat security, Python cheat detection, automated customer integration, and enhanced license protection. The new update is designed to help Metin2 private server owners create a safer, more stable, and more secure gameplay environment.
Modern Metin2 cheats are no longer limited to simple packet editing or client modifications. Many advanced tools now rely on Python-based injection methods, memory tampering, and automation frameworks that are difficult to detect using traditional anti-cheat systems.
Advanced Python Cheat Detection for Metin2
One of the most important additions in M2Guard v1.5 is the new Python cheat analysis engine. The system can now detect suspicious behavior related to tools such as PyInjector, Pymem, ctypes injection, and other Python-based cheat utilities commonly used against Metin2 clients.
The detection infrastructure focuses on multiple high-risk categories including:
- Process injection attempts
- Memory tampering activity
- Automation and bot-based cheats
- Suspicious third-party tooling behavior
To reduce false positives, M2Guard now uses a corroboration-based validation model. A single Python detection event alone is not considered enough for enforcement. The system requires additional supporting indicators before a violation is confirmed.
Automated Metin2 Client Integration
M2Guard v1.5 also introduces a fully automated customer integration service. Developers can now upload source files directly through the admin panel and receive an automatically patched client bundle without manual integration work.
The system currently supports automatic processing for:
- PythonPlayer.cpp
- UserInterface.cpp
- PythonNetworkStreamPhaseGame.cpp
The patcher automatically injects critical M2Guard functions and protection calls, including initialization routines, player identity updates, movement verification, attack speed validation, and attack interval reporting.
M2Guard additionally detects Auto Hunt state variables automatically and inserts required SetGameFlag calls into all related state transition points. This significantly reduces integration mistakes and speeds up deployment time.
Improved License & API Key Security
Security improvements in M2Guard v1.5 also extend to the licensing infrastructure. License keys and API keys are now protected using bcrypt hashing for stronger security. Legacy SHA256 hashes remain supported for backward compatibility and are upgraded automatically after the first successful verification.
The API validation system now includes prefix-based fast lookup optimization. Instead of comparing every stored API key individually, the system performs pre-filtering using the first eight characters of the key, improving performance and scalability.
Replay attack prevention has also been added through nonce and timestamp validation, providing additional protection for license authentication requests.
API-Based Update Delivery
All M2Guard v1.5 updates are delivered directly through the API infrastructure. Customers do not need to download or reinstall DLL files manually after updates. This ensures faster deployment, easier maintenance, and a smoother update process for server administrators.
With v1.5, M2Guard continues to strengthen its position as an advanced Metin2 anti-cheat solution focused on security, stability, automation, and modern cheat detection technologies.