OZero Security Blog
Unity game security — how cheats and tampering work, and Native-based defense.
How Unity SpeedHack Works, and a Native-Based Detection Strategy
How SpeedHack manipulates OS timers in Unity games, why C#-level checks (even with IL2CPP) get neutralized, and how a Native layer detects SpeedHack via an independent clock and trusted time.
Anti-CheatHow Memory Tampering (Memory Hacks) Works, and a Unity Defense Strategy
How Cheat Engine and GameGuardian find and change currency/health values in game memory, why plain variable storage is dangerous, and how Native secure value types defend against it.
Anti-CheatEvery Cheat and Hack Type Targeting Unity Games — A Complete Guide
From SpeedHack and memory tampering to DLL injection, save manipulation, MOD APKs, and Steam cracks — a comprehensive overview of the 7 major attack types threatening Unity games, their mechanics, and practical defense strategies.
Anti-PiracyHow Steam DRM Gets Bypassed — Distribution Protection Limits and Client-Side Defense
Learn how Steam DRM bypasses happen and how layered Native C++ integrity, injection detection, and ownership checks can delay public cracks and unauthorized Unity game distribution.
Anti-PiracyHow MOD APKs Are Made — Android Game Tampering and Defense
Learn how MOD APKs are decompiled, repackaged, and re-signed, why IL2CPP alone is insufficient, and how Native signature and integrity checks detect Unity game tampering.
Adoption GuideA Realistic Security Guide for Indie Game Studios — Starting With Limited Resources
No dedicated security staff or large budget required. A practical, step-by-step guide for indie and solo developers to cover the most critical security (anti-cheat) bases before and after launch with limited resources.
Anti-PiracyIs IL2CPP Really Secure? — How It Gets Reverse-Engineered and What to Do About It
Many developers assume IL2CPP fully protects their code. This article explains how IL2CPP metadata exposes class and method structure, and how build integrity verification fills the gap.
Data ProtectionHow Game Save Files Get Tampered With — Protecting Stored Data in Practice
Explore how game save file tampering works, why simple encryption isn't enough, and how to build effective multi-layer defenses including HMAC integrity verification and Steam Cloud-compatible protection.
Anti-CheatWhat Is DLL Injection and Hooking? — Process Infiltration and Native Detection
Learn how DLL injection and function hooking — the foundation of advanced cheats like aimbots — work in Unity games, why C#-layer detection falls short, and how Native-layer defense strategies hold up.
Adoption GuideBuild Anti-Cheat In-House or Use an SDK? — A Realistic Opportunity Cost Comparison for Developers
A realistic comparison of the upfront cost, maintenance burden, and bypass resistance of building a Unity game security system in-house versus adopting a commercial SDK. Find out which choice fits your team.