Official apps receive security patches and Android version updates. A Mod APK is static. If a new Android vulnerability (like Stagefright or BlueBorne) emerges, your modded app will remain exposed.
Moreover, in some jurisdictions (including the US and EU), downloading cracked software violates the Computer Fraud and Abuse Act and copyright laws—though individual users are rarely prosecuted, the legal risk isn't zero. Connection Stabilizer Booster Pro Mod Apk