Because the binary is tampered with, , integrity checks , and runtime anti‑tamper mechanisms built into the official app are either disabled or bypassed, creating an attack surface for malicious actors.

Using GB Facebook is not illegal per se in most countries, but it violates Meta’s service agreement and may expose you to civil or contractual repercussions (e.g., account termination).

| Issue | Explanation | |-------|-------------| | | Section 3.2 of Facebook’s TOS prohibits “modifying, translating, adapting, or creating derivative works” of the service. Using a modified client is a breach that can lead to account suspension. | | Copyright Law | The APK is a compiled work protected by copyright. Decompiling, altering, and redistributing it without permission may infringe copyright in many jurisdictions (e.g., United States, EU). | | Google Play Policies | Google forbids distribution of “modified versions of apps that are not authorized by the original developer.” Consequently, GB Facebook will never be listed on Play Store, and Google may flag devices that install it as “potentially harmful.” | | App Store & Device Warranty | Installing side‑loaded APKs can void warranties on some OEM devices (especially if unlocking bootloader is required). | | Data‑Protection Regulations | If the mod collects or transmits personal data without a transparent privacy notice, it may breach GDPR (EU), CCPA (California), or other local privacy statutes. | | Liability | Users accept personal risk. If the mod leads to account bans, data loss, or malware infection, the mod’s developers are rarely held accountable. |